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Question 560532: question-A man has some hens and cows.If the number of heads be 48 and the number of feet equals 140,then the number of hens will be?
Click here to see answer by mananth(16946)

Question 560531: question-A piece of cloth costs Rs.35.If the length of the piece would have been 4 mtr longer and each metre costs Rs.1 less,the cost would have remained unchanged.How long is the piece?

Click here to see answer by mananth(16946)

Question 560767: how much pure acid is in 500 mililiters of a 14% acid solution
?
Click here to see answer by jim_thompson5910(35256)

Question 560772: if 10,000 is invested for one year at 2.5% simple interest, how much interest is earned?
Click here to see answer by rfer(16322)

Question 560881: a fuel blend is made from mixing 1 quarts of oil at $1.70 per quart with 8 gallons of gasoline T $2.05 per gallon. what is the cost, to the nearest cent of gallon of the fuel mixture?

Click here to see answer by rfer(16322)

Question 560951: Can someone please help me in figureing this out.
The owner of a gourmet coffee shop wants to create 200 pounds of a special blend of coffee to sell at $8.15 per pound. He also wants to use all 80 pounds of the $6.50 blend he has on hand. How expensive should the coffee be that he uses for the remaining 120 pounds?
Click here to see answer by mananth(16946)

Question 561085: you obtain 6 grams of a 7 % saline solution from a mixture of a 4 % saline solution. How much of the 14% saline solution is used in the mixture?
Click here to see answer by Maths68(1474)

Question 561093: How much pure acid should e added to 51 cc of 12% acid to increase the concentration of 15%?
Click here to see answer by mananth(16946)

Question 561121: a single ice cream cone costs $2.25. A double cone costs $3.00. Total sales for the day equals $66.00. There were 8 more double cones sold this day than single cones. How many single cones and double cones were sold?
My setup looks like this but cannot get past it.
$2.25A + $3.00(B + 8)= $66.00
Where A = Single Cones and B = Double Cones
Thank you in advance for the help.
Gary
Click here to see answer by Theo(13342)

Question 561179: How much pure acid must be mixed with 80 liters of 20% acid to get 90 % acid?
Click here to see answer by nerdybill(7384)

Question 561580: A tank holds 140 liters of a chemical solution. Currently, the solution has a strength of 40%. How much of this solution should be drained and replaced with 80% solution to get a final strength of 60%
Click here to see answer by stanbon(75887)

Question 561722: How many liters of a 10% salt solution should be added to 80 liters of a 35% salt solution to obtain a mixture that is a 30% salt solution?
Click here to see answer by TutorDelphia(193)

Question 561724: I need help solving a word problem using formula %*amount=product
Can you please help me set the problem up and help me solve
Crisco Canola Oil is 7% saturated fat. Crisco blends corn oil that is 14% saturated fat with Crisco Canola Oil to get Crisco Canola and Corn Oil, which is 11% saturated fat. How many gallons of corn oil must crisco mix with 600 gallons of crisco canola oil to get crisco canola and corn oil?
Click here to see answer by ankor@dixie-net.com(22740)

Question 561723: I have some mixture problems i need help with. Can you please help me?
I have to use a formula %*amount=product
Gus has on hand a 5% alcohol solution and a 20% alcohol solution. He needs 30 liters of a 10% alcohol solution. How many liters of each solution should he mix together to obtain the 30 liters?

My table i made is
Liters % total liters
5% sol. x-.05 .05 .05x
20% sol. y .20 .20y
mixture x+y=10 .01

Can you please help me know what I should do or what I did wrong?
Click here to see answer by ankor@dixie-net.com(22740)

Question 562081: please help me solve this problem.
manuel traveled 4 hours non stop to mexico a total of 166 mles. he took a train part of the way which averaged 50 mph, and then took a bus the remaining distance, which avereged 30 mph. how long was manuel on the train?
Click here to see answer by mananth(16946)

Question 562256: A chemist has three solutions of acid that must be mixed to obtain 20 liters of a solution that is 38% acid. Solution A is 30% acid, solution B is 20% acid and solution C is 60% acid. Because of another chemical in these solutions, the chemist must keep the ratio of solution C to solution A at 2 to 1. How many liters of each should she mix together?

Click here to see answer by josmiceli(19441)

Question 562273: if a chemist has 40 ounces of a 25% acid solution, how much acid should be mixed with it to produce a new solution that is 40%
Click here to see answer by mananth(16946)

Question 562273: if a chemist has 40 ounces of a 25% acid solution, how much acid should be mixed with it to produce a new solution that is 40%
Click here to see answer by issacodegard(60)

Question 562337: if 40 liters of an acid solution is 60% acid, how many liters of pure acid are there in the mixture?
Click here to see answer by mananth(16946)

Question 562339: if you mix 10 liters of 50% acid solution with 30 liters of 20% acid solution, then what is the concentration of acid in teh resulting mixture?
Click here to see answer by nerdybill(7384)

Question 563112: How many gallons of a 60% antifreeze solution must be mixed with 80 gallons of 25% antifreeze to get a mixture that is 50% antifreeze?
Can you explain to me how to do this?

Click here to see answer by scott8148(6628)

Question 563719: A chemist has two solutions of salt with different mass percent concentration (m/m). The first solution has concentration 5.0% , and the second has one 2.0%. If you take 50g aliquots of both of these solutions and mix them together what will the concentration of the new solution be?
Click here to see answer by Alan3354(69443)

Question 563810: Candy and Tim share a paper route. It takes Candy 36 minutes to deliver all the papers, whereas Tim takes 72 minutes. How long does it take them when they work together?
Click here to see answer by stanbon(75887)

Question 563812: An executive invests $10,000,some at 9% and some at 8% annual interest. If he receives an annual return of $830, how much is invested at each rate?
Click here to see answer by stanbon(75887)

Question 563814: The nurse has 1.14 liters of a solution that is 58% alcohol. How many liters of pure alcohol must she add to bring the solution up to a 93% concentration?
Click here to see answer by stanbon(75887)

Question 563817: Two cars leave Pima Community College traveling in opposite directions. One car travels at 80 mph and the other at 54 mph. In how many hours will they be 938 miles apart?
Click here to see answer by stanbon(75887)

Question 563816: A college student earns $25 per day delivering advertising brochures door to door, plus 50 cents for each person he interviews. How many people did he interview on a day when he earned $85?
Click here to see answer by fcabanski(1391)

Question 563781: What quantity of 65 percent acid solution must be mixed with a 25 percent solution to produce 576 mL of a 50 percent solution?
Click here to see answer by ptaylor(2198)

Question 564113: mark decides to but 15 liters of blue paint. He still wants to mix blue paint and yellow paint in the ratio of 2:3 to make green paint. how many of liters of yellow paint should he but and how many liters of green paint he can make? use mathematical reasoning to justify your answer
Click here to see answer by josmiceli(19441)

Question 564125: how many liters of 60 percent acid solution has to be added to a 75 percent acid solution to make 20 liters of 72 percent?
Click here to see answer by mananth(16946)

Question 564234: How much of a 25% alloy and how much of a 50% alloy should be mixed to make 1000g of a 45% alloy
I have tried:
.25x+.5y=.45(1000)
x+y=1000
y=3000 and X=-2000
Answer doesn't make sense
Click here to see answer by nerdybill(7384)

Question 564326: A biologist collected 188 fern and moss samples. There were 12 fewer ferns than moss samples. How many fern samples did the biologist collect?
Click here to see answer by ad_alta(240)

Question 564350: a merchant has coffee worth $3 a pound that she wishes to mix with 50 pounds of coffee worth $9 a pound to get a mixture worth $8 a pound. How many pounds of the $3 coffee should be used?
Click here to see answer by ad_alta(240)

Question 564391: From a point on a river,two boats are driven in opposite directions, one at 6 miles per hour and the other at 5 miles per hour. In how many hours will they be 33 miles apart?
Click here to see answer by ad_alta(240)

Question 564384: Find the length of a rectanglular lot with a perimeter of 118m if the length is 5m more than the width.
Click here to see answer by ad_alta(240)

Question 564617: How many gallons of distilled water must be mixed with 50 gallons of 30% alcohol solution to obtain a 25% solution?
Click here to see answer by ad_alta(240)

Question 564653: A chemist has 500L of a 15% acid solution. How much pure acid should be added to make a 20% acid solution?

Click here to see answer by Maths68(1474)

Question 564714: how many gallons of hydrochloric acid must be added to 12 gallons of a 30% solution to obtain a 40% solution?
Click here to see answer by Maths68(1474)

Question 564734: How many gallons of distilled water must be mixed with 5 gallons of 30% alcohol solution to obtain a 25% solution?
Exlpain...
Click here to see answer by mananth(16946)

Question 564781: In an alloy of 100 pounds of zinc and copper there are 75 pounds of copper. How much copper must be added so that the alloy may be 10% zinc?
Click here to see answer by stanbon(75887)

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