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Question 424935: Scott's Winterizer Lawn Fertilizer is 22% nitrogen. Schultzs Lime with Lawn Fertilizer is 4% nitrogen. William Weaver, owner of Weaver's Nursery, wishes to mix these two fertilizers to make 400 pounds of a special 10% nitrogen mixture for midseason lawn feeding. How much of each fertilizer should he mix?
Click here to see answer by mananth(16946)

Question 425046: Carol bought 36 two-cent and three-cent stamps for $1.00. How many stamps of each kind did she buy?
Click here to see answer by htmentor(1343)

Question 425353: A 280 ML solution is 20% salt. How much water should be added to make the solution 14% salt?
This is an extra credit question but I really want the bonus points. Here's what I've already tried:
20% of 280 is 56 ML. So then I found 14% of 280 and got 39.2 ML, so would my answer be 240.8 ML (I subtracted 39.2 from 280) of water would be needed to make the solution 14% salt, or am I completely off? Thank you sooo much! : )
Click here to see answer by ankor@dixie-net.com(22740)

Question 425465: 4) John wants to make a 100 ml of 5% alcohol solution mixing a quantity of a 2% alcohol solution with a 7% alcohol solution. What are the quantities of each of the two solutions (2% and 7%) he has to use?
Click here to see answer by htmentor(1343)

Question 425514: Dave has 20 ounces of a 20% of salt solution, How much salt should he add to make it a 25% solution?
Click here to see answer by josmiceli(19441)

Question 425515: How many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of chocolate worth 90 cents a pound to produce a mixture worth $1.00 a pound?
Click here to see answer by mananth(16946)

Question 425779: If I was to win $20,000.00 how much taxes will I have to pay. Win from Vegas and live in HI.
Mahalo, Barbie Coleman
Click here to see answer by stanbon(75887)

Question 425916: i need help solving the following word problem:
A wholesaler has 100kg of mixed nuts that sell for $4/kg. In order to make the price more attractive, she plans to mix in some cheaper nuts worth $3.20/kg. If the wholesaler wants to sell the mixture for $3.40/kg, how many kilograms of the cheaper nuts should be used?
I came up with an answer of 75kg. Is this correct?
Click here to see answer by Theo(13342)

Question 426151: how many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of chocolate worth 90 cents a pound to produce a mixture worth $1.00 a pound?
Click here to see answer by josmiceli(19441)

Question 426160: how much water should be added to 26 mL of 16% alchohol solution to reduce the concentration of 13%
Click here to see answer by josmiceli(19441)

Question 426338: I wish to spray a tree. The recipe calls for 60 lbs of baking soda in a 100 gallons of water. Obviously not everyone has a 100 gallon sprayer. To spray this tree a one gallon sprayer will be used. How much baking soda will be used?
Click here to see answer by algebrahouse.com(1659)

Question 426463: How many liters of a 30% solution should be added to 30 liters of a 10% solution if the final mixture is to contain a 24% solution?
Click here to see answer by mananth(16946)

Question 426477: A science teacher has one solution which is 20% pure salt and another solution which is 50% pure salt. How much of each solutionshould she mix if she wants 30 ounces of a 30% pure salt solution?
Click here to see answer by edjones(8007)

Question 425734: how much water must be evaporated from 36 ounces of a 5% salt solution to make a 9% salt solution
Click here to see answer by lwsshak3(11628)

Question 426354: In a container there are 12 ounces of a solution that is 80% acid. how many ounces of pure water must be added to produce a mixture that is 20% acid solution?
Click here to see answer by lwsshak3(11628)

Question 423478: Fruit drink a consists of 6% fruit juice and drink. B contains 15% fruit juice and drink. how much of each kind of drink should you mix to get 4L of 10% fruit juice.

i tried x+y=4 and .06x+.15y=.4 for my system but i cant get the right answers when i check them
Click here to see answer by lwsshak3(11628)

Question 426625: How many kilograms of salt must be added to 24 kg of a 20% salt solution in order to increase the concentration of salt to 40%?

Click here to see answer by ewatrrr(24785)

Question 426658: I am having a terrible time trying to figure out!
Please Help!!
a textile company has a specific dyeing and drying times for its different cloths. A roll of cloth A requires 75 minutes of dyeing time and 50 minutes of drying time. A roll of cloth B requires 55 minutes of dyeing time and 30 minutes of drying time. the production division allocates 3340 minutes of dyeing time and 2040 minutes of drying time for the week. How many rolls of each cloth can be dyed and dried?

Click here to see answer by ewatrrr(24785)

Question 426895: How many pounds of chamomile tea that cost $4.50 per pound must be mixed with 11 lb of orange tea that cost $2.80 per pound to make a mixture that cost $3.82 per pound? Round to the nearest decimal
Click here to see answer by stanbon(75887)

Question 426911: how many quarts of 6% butterfatmilk and 3% of butterfat milk should be mixed to yield 75 quarts of 5%butterfat milk
Click here to see answer by mananth(16946)

Question 426952: How would I set this problem up? A Cupronickel alloy that is 60% copper and 40% nickel is needed to manufacturea marine propeller. Only two cupronickel alloys are available, one is 75% copper and 25% nickel and the other is 55% copper and 45% nickel. How many pounds of each of these alloys need to be melted and combined to obtain 300 pounds of the 60% copper/ 40% nickel alloy? I am havin trouble because there are two metals that need to be melted together and I'm not sure of what I am supposed to do.
Click here to see answer by mananth(16946)

Question 427081: I have on hand morphine 500mg in 500ml normal saline. I need to administer morphine 80mg per hour in a continuous IV infusion. How many ml per hour do I set the controller? I tried to figure it by dividing 80mg by 0.001 ml but came up with 80,000 ml per hr or 5,333 drops per hour, that is absurd! So I took the 500mg and divided it by the 80mg and came up with 6.25ml to set the controller. Correct? Thank You in advance for your help :)
Click here to see answer by scott8148(6628)

Question 427939: Pure acid is to be added to a 5% acid solution to obtain 95L of 89% solution. What amounts of each should be used?
Click here to see answer by robertb(5830)

Question 427993: A silversmith mixed 25 g of a 60% silver alloy with 40 g of a 5% silver alloy. What is the percent concentration of the resulting alloy? (Round to the nearest tenth of a percent.)
%
Click here to see answer by mananth(16946)

Question 428346: Assume you have sea water that weighs 64lb/ft3 and contains 35 parts per thousand (0.0035) dissolved salt by weight. How many cubic feet of the sea water would you need to place in an evaporation basin to collect 125lb of sea salt.
Click here to see answer by josmiceli(19441)

Question 428386: how much pure gold (24k) must be mixed with 60% gold to get 20 grams of 75% gold
Click here to see answer by mananth(16946)

Question 428511: How much pure acid should be mixed with 6 gallons if a 60% acid in order to get a 70% acid solution
Click here to see answer by mananth(16946)

Question 428518: How many liters of distilled water must be added to 140 liters of an 80% alcohol solution to obtain a 70% solution? i think the answer is 2.3 liters.
Click here to see answer by mananth(16946)

Question 428537: How many liters of distilled water must be added to 140 liters of an 80 percent alcohol solution to obtain a 70 percent solution?
Click here to see answer by mananth(16946)

Question 428542: Suppose you begin with 2.8 mg of a pure radioactive substance and 3.6 h later determine that 0.35 mg remain. What is the half-life of the substance?
Click here to see answer by Gogonati(855)

Question 428710: A butcher has some hamburger which is 4% fat and some hamburger which is 20% fat. How much 4% fat hamburger is needed to make 120 pounds of hamburger that is 10% fat?
Click here to see answer by htmentor(1343)

Question 428740: How many gallons of cream that is 23% butterfat and milk that is 3% butterfat must a dairy farmer mix to make a 30 gallon mixture of milk that is 4% butterfat?
Click here to see answer by stanbon(75887)

Question 429037: If Soybean Meal is 16% protein and cornmeal is 8% protein how many pounds of each would you use to get 320 pounds of mixture that is 15% protein?
Click here to see answer by John10(297)

Question 429087: To prepare a 5% solution of baking soda in 500mls of water how much baking soda do I need and how would I mathmatically figure this?

Click here to see answer by ewatrrr(24785)

Question 429535: water must be added t 20 millileters of a 4% minoxidle solution to dilute it to a 2% solution.how many milliters of water should be used
Click here to see answer by htmentor(1343)

Question 429657: How many gallons of 25% alcohol solution and 40% alcohol solution must be mixed to get 6 gallons of 30% alcohol solution?
......gallons of 25%
.....gallons of 40%
Click here to see answer by ewatrrr(24785)

Question 430068: if you have $7/lb coffee and $2/lb coffee equaling 30 lbs how much of the $7 coffee do i add to make it $5/lb coffee?
Click here to see answer by jorel1380(3719)

Question 430422: Sam invested $2000 at 5 1/4% annual interest and $3000 at 8 1/2 annual interest. What percent interest is he earning on his total investment?
Click here to see answer by mananth(16946)

Question 430421: A chemist mixes 12 L of a solution that is 45% acid with 8 L of a solution that is 75 acid. What is the percent of acid of the mixture?
Click here to see answer by lwsshak3(11628)

Question 430436: How many liters of water must be added to 50 L of a 30% acid solution in order to produce a 20% acid solution?
Click here to see answer by robertb(5830)

Question 430437: How many milliliters of water must be added to 60 mL of a 15% iodine solution in order to dilute it to a 10% solution?
Click here to see answer by robertb(5830)

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