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Question 58027: 48. Divide.50p^9q^5/10pq^2

A) 5p8q3
B) 5p9q3
C) 40p8q3
D) 40p9q3
This one gave me a huge headache!!!! Thanks so much for your help!!
Click here to see answer by stanbon(75887)

Question 58274: How many ounces of pure gold must be added to five ounces of something that is 1% gold in order that the mixture is 6% gold?
Click here to see answer by ankor@dixie-net.com(22740)

Question 58274: How many ounces of pure gold must be added to five ounces of something that is 1% gold in order that the mixture is 6% gold?
Click here to see answer by stanbon(75887)

Question 58274: How many ounces of pure gold must be added to five ounces of something that is 1% gold in order that the mixture is 6% gold?
Click here to see answer by ptaylor(2198)

Question 59288: You have 20 stampes that have a total value of $6.62. Some of the stamps are worth $0.24 each and others are worth $0.37 each. How many stamps of each type do you have? Please show how to solve this question.
Click here to see answer by funmath(2933)

Question 59519: The word problem is how to solve if I am given to mixtures with each mixture costing a different amount per pound.
At first I came up with these equations...
rice x 2.75/lb. + peas x $1.25/lb. = rice and peas x $1.75/lb.
I then tried to solve for R (rice).
which left me with R@$2.75/lb. = P&R@$1.75/lb. - P@$1.25/lb.
that's where I'm stuck...
I think if I divide out the rice variable I'll be left with fractions all over the place. What step am I leaving out?

Click here to see answer by tutorcecilia(2152)

Question 60085: Good Evening,
I have several different types of word problems that I don't know how to solve.
Perhaps you could help me with them?
1. A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 10% cement should he mix with 8 bags of 12.5% cement to produce a mix containing 11% cement?
2. Mardi received an inheritance of $50,000. She invested part at 8% and deposited the remainder in tax-free bonds at 12%. Her total annual income form the investments was $4800. Find the amount invested at 8%
3. Jill is 11 kilometers away form Joe. Both begin to walk toward each other at the same time. Jill walks at 3 kilometers per hour. They meet in 2 hours. How fast is Joe walking?
Thank you
KC
Click here to see answer by greenman(5)

Question 53078: The cooling system of a certain foreign-made car has a capacity of 16 liters. If the system is filled with a mixture that is 35% antifreeze, how much of this mixture should be drained and refilled by pure antifreeze so that the system is filled with a solution that is 50% antifreeze?
Click here to see answer by ptaylor(2198)

Question 53029: A health clinic uses a solution of bleach to sterilize petri dishes in which cultures are grown. The sterilization tank holds 100 gal. of a solution of 2% ordinary household bleach mixed with pure distilled water.. New research indicates that the concentration of bleach should be 5% for complete sterilization. How much of the solution should be drained and replaced with bleach to increase the bleach content to the recommended level?
Click here to see answer by ptaylor(2198)

Question 58629: (Photo reference: carton of 2% milk which has 2% butterfat and picture of carton of whipping cream containing 9% butterfat).
"Refer to the graphic at the right" How much whipping cream and 2% milk should be mixed to obtain 35 gallons of milk with 4% butterfat??
Click here to see answer by ptaylor(2198)

Question 60952: Mardi received an inheritance of $50,000. She invested part at 8% and deposited the remainder in tax-free bonds at 12%. Her total annual income from the investments was $4,800. What amount was invested at 8%?
Click here to see answer by checkley71(8403)

Question 60951: If you mix 140 mL of a 60% acid solution with 200 mL of a 30% solution you can get a 350 mL of a _____% solution.
Help!
Click here to see answer by checkley71(8403)

Question 60951: If you mix 140 mL of a 60% acid solution with 200 mL of a 30% solution you can get a 350 mL of a _____% solution.
Help!
Click here to see answer by joyofmath(189)

Question 60955: A contractor mixes concrete from bags of pre-mix. How many bags with 10% cement should he mix with 8 bags of 12.5 cement to produce a mix of 11% cement?
Please help - I'm stuck.
Click here to see answer by ptaylor(2198)

Question 61028: Would someone mind taking a look at this question and see if my answer is correct. I think I am on the right track.
One needs to mix a 30% acid solution with a 50% acid solution to obtain 12 ounces of a 45% acid solution. How many ounces of each of the acid solutions must be used?
Amt. of mix is 12 oz
Amt of 1st acid = x
Amt. of 2nd acid is the rest = 12-x
Amt. of acid in the mixture = .45(12)
Amt. of 1st acid = .30x
Amt. of 2nd acid = .50(12-x)

3 oz of 30% acid
9 oz of 50% acid
Click here to see answer by ankor@dixie-net.com(22740)

Question 61054: What quantity of 60% acid solution must be mixed with 30% acid solution to produce 300mL of a 50% solution?
Click here to see answer by Earlsdon(6294)

Question 61047: How many liters of a 14% alcohol solution must be mixed with 20 liters of a 50% solution to get a 30% solution?
Help
Click here to see answer by checkley71(8403)

Question 52998: Pleas help me with this problem.
Roy has 8 gallons of 40% antifreeze solution. How much 100% antifreeze mus be added to make a solution that is at least 60% antifreeze.
Thanks =)
Click here to see answer by ptaylor(2198)

Question 52233: Adult tickets for a play cost $5 and children tickest cost $2 for 1person. 460 tickets were sold. Recipts for person were $1880. Find the # of adult tcikets sold. You must use the chart.(first colmn in chart is type, than cost,and lastly value) the answer is 320. But I dont know what they plugged into the chart to get this answer. I have the types as Adult, children, and mixture. Cost as 5,2,and 7. And the value as 5x, 2(460-5x) and (460)7. What am I doing wrong?
Click here to see answer by ptaylor(2198)

Question 49678: a restaurant chef mixes 20 lb of snow peas costing 1.99 a pound with 14 lb of petite onions costing 1.19 a pound to make a vegetable medley for the evening meal. find the cost per pound of of the mixture.
Click here to see answer by ptaylor(2198)

Question 49562: A tank contains 20 liters of a mixture of alcohol and water which is 40% alcohol by volume. How much of the mixture should be removed and replaced by an equal volume of water so that the resulting solution will be 25% alcohol by volume? Thanks a lot!
Click here to see answer by ptaylor(2198)

Question 57310: Your assistance is greatly appreciated.
Angela needs 20 quarts of 50% antifreeze solution in her radiator. She plans to obtain this by mixing some pure antifreeze with an appropriate amount of 40% antifreeze solution. How many quarts of each should she use?
Click here to see answer by ptaylor(2198)

Question 25920: Here is the question. I know that there is a way to set these up, and the instructor said I would start to see a pattern, but she does not explain clearly how to do these. I am confused.
60 fluid ounces of a 15% muriatic acid solution is needed to kill algae in a pool. If the technician has a 5% solution and a pure solution on hand, how many ounces of each must be combined to create the 15% solution?
I tried to set it up like this:
.05X+.10(.15-X)=24(.15)
I am getting my numbers put in the wrong place. Please help me.
Thank you. Donna
Click here to see answer by ptaylor(2198)

Question 49580: How many Liters of a 50% alcohol solution must be mixed with 40 Liters to obtain a 60 Liter solution?
Click here to see answer by ptaylor(2198)

Question 49561: A tank contains 20 liters of a mixture of alcohol and water which is 40% alcohol by volume. How much of the mixture should be removed and replaced by an equal volume of water so that the resulting solution will be 25% alcohol by volume?
Click here to see answer by ptaylor(2198)

Question 61434: Peggy has a 500 milliliters of a 60% solution of copper sulfate. How many milliliters of a 30% solution of copper sulfate should be added to obtain a 50% solution?
Click here to see answer by checkley71(8403)

Question 49546: Dearest tutors, can you help me regarding my problem? thank you for that..
1. A chemist wanted to mix milk testing 3% butterfat with cream and testing 28% butterfat. How many quartz of each kind must the chemist use to produce a mixture of 10 gallons which shall test 18% butterfat?
Click here to see answer by ptaylor(2198)

Question 48607: A candy store owner wishes to mix candy that sells for $3 per pound with candy selling for $4 per pound to make a mixture to sell for $3.60 per pound. How many pounds of each kind of cany should be used to make an 80 pound mixture?
Thank you
Click here to see answer by ptaylor(2198)

Question 48604: a coin collector has $45 in quarters and dimes. How many coins of each does he have is the total number of his coins is 240?
Thank you very much!
Click here to see answer by ptaylor(2198)

Question 62407: A food shop mixes nuts selling at $16/lb with fruit selling at $3/lb. They want a mixture of 7 lb. to sell at $12/lb. How many pounds of each should they use?
I tried: $16(n)+ $3(7 - n) = $12(7) and got n = 4 and 9/13 lb. so
f = 2 and 4/13 lb. Is this right?
Click here to see answer by ptaylor(2198)

Question 62965: How many gallons of a 20% ammonia solution must be mixed with a 5% ammonia solution to create 20 gallons of 11% ammonia solution?
Click here to see answer by stanbon(75887)

Question 63244: I am having problems setting up these word problems on travel time, average speed and mixtures. Please help!
Click here to see answer by funmath(2933)

Question 63246: How many grams of salt must be added to 50 grams of a 20% solution in order to increase the content to 25%?
Click here to see answer by ptaylor(2198)

Question 63246: How many grams of salt must be added to 50 grams of a 20% solution in order to increase the content to 25%?
Click here to see answer by 303795(602)

Question 63247: A man invested a sum of money at 3% and three times that amount at 2%. If the total interest received on the investments was Php 270, find the sum invested at each rate
Click here to see answer by uma(370)

Question 63287: a leather jacket has a sale price 0f $102 if the sale price is 0ne third off the orignal sale price what was the orignal price of the jacket
Click here to see answer by ptaylor(2198)

Question 63752: A metal alloy is 25% copper. Another metal alloy is 50% copper. How much of each alloy should be mixed to create 1000 grams of an alloy that is 45% copper?
Click here to see answer by stanbon(75887)

Question 63761: A store is selling CD's for $10.50 and for $8.50. You buy 10 total and spend $93.00. How many of each price did you buy?
Click here to see answer by Earlsdon(6294)

Question 63782: How much water must be evaporated from 240 gallons of a 3% salt solution to produce a 5% salt solution?
Click here to see answer by checkley71(8403)

Question 63759: A health food store mixes granola that costs them $4 per pound and raisins that cost them $2 per pound together to make 25 pounds of raisin granola. How many pounds of each do they need to produce a mixture that costs them $80?
Click here to see answer by ptaylor(2198)

Question 63758: A health food store mixes granola that costs them $4 per pound and raisins that cost them $2 per pound together to make 25 pounds of raisin granola. How many pounds of each do they need to produce a mixture that costs them $80?
Click here to see answer by ptaylor(2198)

Question 63899: Please help me solve this equation. {How many grams of 4% salt solution must be mixed with 80 grams of 11% salt solution to make an 8% salt solution?}
Click here to see answer by stanbon(75887)

Question 64235: The chemical formula for sulfuric acid is h2so4. If the weight of the acid was 1470 grams, how much did the sulfur weight? (h : 1, s : 32, O 16)
Click here to see answer by 303795(602)

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