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Question 554802: Hello tutor, I need help on this word problem, please help me.
How many liters of a 70% alcohol solution must be added to 50 liters of a 40% alcohol solution to produce a 50% alcohol solution?

Thank You!!!!!!!!
Click here to see answer by ankor@dixie-net.com(22740)

Question 555385: turn 85% into a fraction
Click here to see answer by jim_thompson5910(35256)

Question 555388: turn 13.1% into a fraction
Click here to see answer by jim_thompson5910(35256)

Question 555382: turn 6% into a fraction
Click here to see answer by richard1234(7193)

Question 555567: the area of a rectangular filed is 450m^2and the difference between the lengths of two adjacent sides is 7m. find the of the perimeter of the rectangle.
Click here to see answer by mathstutor494(120)

Question 555639: An alloy which weighs 118 kg is 10 percent silver. How much silver must be added to produce a metal that is 25 % silver?
Click here to see answer by josmiceli(19441)

Question 555788: if 5 ozs of a powdered drug are mixed with 2 ozs of sugar, what part of the total mixture is the drug?
Click here to see answer by josmiceli(19441)

Question 555789: How many gallons of a 50% alcohol solution must be mixed with 80 gallons of a 14% solution to obtain a solution that is 40% alcohol?
Click here to see answer by richwmiller(17219)

Question 555792: 24 equals 2/3rds of what number and how did you get that number
Click here to see answer by scott8148(6628)

Question 556820: If 75 litres cost �1000 what does 1 litre cost

regards
Sarah
Click here to see answer by Theo(13342)

Question 556911: from 2 stock solutions 18% and 42% you are to prepare 1.5 liters of a 34% solution. How many milligrams of each stock do you need?
Click here to see answer by stanbon(75887)

Question 556931: how many pounds of a 6 percent solution and water should be mixed together to obtain 150lbs of a 5 percent solution?
Click here to see answer by stanbon(75887)

Question 557055: How many quarts of pure antifreeze must be added to 3 quarts of a 10% antifreeze solution to obtain a 30% antifreeze solution (Hint: pure antifreeze is 100% antifreeze)
I can not figure this out!
Click here to see answer by Earlsdon(6294)

Question 557159: A chemist needs to make 30 ounces of a 30% alcohol solution by mixing a 15% alcohol solution with a 40% alcohol solution. How many ounces of the 40% solution does she need
Click here to see answer by stanbon(75887)

Question 557073: you have to prepare a 2 L of 3% bleach and water solution, how many cups of bleach and water do you need?
Click here to see answer by ankor@dixie-net.com(22740)

Question 557444: You have 30L of a 60% acid solution, how many liters of acid do you need to add to have a solution that has a concentration of 80%?
Click here to see answer by Earlsdon(6294)

Question 557518: If a 64 foot rope weighs 20 lbs how much does an 80 foot rope weigh?
Click here to see answer by jim_thompson5910(35256)

Question 557812: How many liters of a 40% acid solution must be added to 100 liters of a 25% solution to obtain a 30% solution?
Click here to see answer by stanbon(75887)

Question 557808: How many pounds of a chicken feed that is 30% corn must be mixed with 300lb of feed that is 60% corn to make a chicken feed that is 60% corn?
Click here to see answer by stanbon(75887)

Question 557805: Five grams of sugar are added to a 45-gram serving of a breakfast cereal that is 10% sugar.What is the percent concentration of sugar in the resulting mixture?

Click here to see answer by stanbon(75887)

Question 558138: How many liters of a 30% alcohol solution must be mixed with 80 liters of a 90% solution to get a 80% solution
Click here to see answer by mananth(16946)

Question 558198: Hello:
please help me fiqure out this word problem for future math problems with the step to perform: i do recall this problems but it has been a while since i done this word math problem
this is the problem: How much of an alloy that is 40% copper should be xixed with 500 ounce tha is 80% copper in order to get an alloy that is 60% copper.
Click here to see answer by mananth(16946)

Question 558207: how many 14 gallon containers can i fill with 405 gallons of water?
Click here to see answer by Earlsdon(6294)

Question 558464: Sara is mixing together a fruit punch for a party. She's made 6 gallons of punch with a mixture of 50% juice. Her mother tells her to change it to a mixture of 60% juice.
How much fruit juice should be added to make the mixture 60% fruit juice (round to the nearest hundredth)?
A)0.4 gallons
B)0.6 gallons
C)1.5 gallons
D)2.1 gallons
Click here to see answer by Earlsdon(6294)

Question 558763: Nuts to You Shoppe sells cashews for $15 per kg and pecans for $10 per kg. How many kilograms of each should be mixed in order to get 20 kg of a mixture worth $12 per kg.
Click here to see answer by mananth(16946)

Question 558822: How many gallons of 30% alcohol solution and 75% alcohol solution must be mixed to get 3 gallons of 45% alcohol solution?
Click here to see answer by mananth(16946)

Question 558821: how much of a (n) 90% orange juice drink must be mixed with 16 gallons of a 30% orange juice drink to obtain a mixture that is 50% orange juice?
Click here to see answer by mananth(16946)

Question 558851: in a chemistry class, 15L of a 13% alchohol solution must be mixed with a 30% solution to get a 15% solution. how many liters of the 30% solution are needed?
Click here to see answer by mananth(16946)

Question 559033: A carton of whipping cream contains 35% butterfat. A carton of "2%" milk contains 2% butterfat. If a volume of whipping cream is mixed with an equal volume of "2%" milk, the percentage of butterfat in the mixture?
Click here to see answer by stanbon(75887)

Question 559037: The average of seven consecutive integers is 10. What are the seven integers?

Click here to see answer by Alan3354(69443)

Question 559364: Soybean meal is 18 percent protein, cornmeal is 9 percent protein. how many pounds of each should be mixed together in order to get 360 pound mixture that is 10 percent protein?
Click here to see answer by mananth(16946)

Question 559380: A 8-quart radiator contains a 60% antifreeze solution. How much of the solution needs to be drained out and replaced with pure antifreeze in order to raise the solution to 80% antifreeze?
Click here to see answer by mananth(16946)

Question 559528: how much 2% alcohol must be mixed with 18% alcohol to get 4,000 ml of 3% alcohol?
Click here to see answer by josmiceli(19441)

Question 559912: How much (a) water and (b) 50% soap solution must be added to one liter of a 5% soap solution to create two liters of an 8% soap solution.
I'm studying for a test tomorrow, so I'm doing all the sample problems in my math book. So, no rush. Any help will be appreciated.
Click here to see answer by josmiceli(19441)

Question 559934: A 12% acid sol. Was mixd wth a 16% acid sol. To make 40L of a 15% acid sol. How much of the 12% and 16% acid solutions were used?
Click here to see answer by Maths68(1474)

Question 559928: Please help me solve the problem: Pure tin was mixed with an 8% tin alloy to produce an alloy that was 25% tin. How much pure tin and how much 8% alloy were used to produce 184kg of 25% alloy?
Click here to see answer by lwsshak3(11628)

Question 560098: Stan Wellback wants to make 5 gallons of 55% gas, 45% oil mixture of fuel for his dirt bike. he has two containers, container A is 95% gasoline, 5%oil and container B is 10% gas, 90% oil. How many gallons (to the nearest tenth) does he need from each container to make his new mixture?
Click here to see answer by josmiceli(19441)

Question 560120: I need help making a table and putting the right numbers in the right spots. I also have to know how to put an equation together to solve. Here is a Story problem.
How many pounds of candy selling at $3.75/lb should be mixed with 35 lbs of candy selling at $5/lb to produce a mixture that should sell at $4.25/lb?
Here is the table I made.

lbs $/lb total $ for candy
Candy 1 x 3.75 $3.75x
Candy2 35 5.00 35(5)=175
mix 35+x 4.25 (35+x)(4.25)

Can you please tell me what I did wrong and show me where the right numbers go in the right spots? Please show me the equation too?
Thanks
Click here to see answer by scott8148(6628)

Question 560136: What quantity of 80 per cent acid solution must be mixed with a 25 percent solution to produce 528 mL of a 50 per cent solution?
Click here to see answer by stanbon(75887)

Question 560145: You will average 40 miles per hour on your trip. My mother's time is worth $10 per hour. How much will her time cost for this trip?
Click here to see answer by nyc_function(2741)

Question 560317: A high-protein diet supplement that costs $6.75 per pound is mixed with a vitamin supplement that costs $3.25 per pound. How many pounds of each should be used to make 5 lb of a mixture that costs $4.65 per pound?
I came up with 6.75x + 16.25 - 3.25x = 4.65 as the equation but it isn't right. I know the answer is 2 lb for the diet supplement and 3 lbs for the vitamin supplement but this equation doesn't lead to that answer. How do I find the correct equation to determine the weights of each supplement in the mixture?
Click here to see answer by scott8148(6628)

Question 560447: In the illustration, how much water should be added to 20 ounces of 15% solution of alcohol to dillute it to a 10% solution?

20oz x oz ? oz
to + to = to
15% 0% 10%
Click here to see answer by josmiceli(19441)

Question 560444: Cream is approximately 22% butterfat. How many gallons of cream must be mixed with milk testing at 2% butterfat to get 20 gallons of milk containing 4% butterfat?
Click here to see answer by josmiceli(19441)

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