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Question 1015898: How many quarts of pure antifreeze must be added to 6 quarts of a 20% antifreeze solution to obtain a 40% antifreeze solution?
Click here to see answer by macston(5194)

Question 1015930: If the sum of a number and five is doubled, the result is three less than the number.. find the number
Click here to see answer by macston(5194)

Question 1015930: If the sum of a number and five is doubled, the result is three less than the number.. find the number
Click here to see answer by fractalier(6550)

Question 1015982: Margo has 40 milliliters of 25% solution. How many milliliters of 60% solution should he add to obtain the required 45% solution?
Click here to see answer by ikleyn(52776)

Question 1015996: The Cashew Company is making a mixture worth $76.88
using 7 pounds of cashews, 2 pounds of almonds and
5 pounds of peanuts. The cashews cost three times
as much as the peanuts and the almonds cost 18
times as much as the peanuts. What is the price of
a pound of the cashews?
Click here to see answer by macston(5194)

Question 1016002: If lemonade costs 1.5 cents per ounce, what is the costs per pint
Click here to see answer by macston(5194)

Question 1016063: Nico is saving money for his college education. He invests some money at 9%, and $1400 less than that amount at 4%. The investments produced a total of $217 interest on 1 year. How much did he invest at each rate?
Click here to see answer by dkppathak(439)

Question 1016083: To create a chocolate blend, chocolate in two concentrations, 56% cocoa and 28% cocoa, are combined together. If 9 ounces of the 56% chocolate is used, how many ounces of the 28% chocolate must be used to obtain a 40% chocolate blend?
If the answer is not an integer, enter it as an exact decimal.

Click here to see answer by macston(5194)

Question 1016162: B is inversely proportional to a. If b=9 when a=3, find b when a=3/2
Click here to see answer by stanbon(75887)

Question 1016306: How many liters of pure water should be mixed with a 17-L solution of 90% acid to produce a mixture that is 90% water?

Click here to see answer by josgarithmetic(39616)

Question 1016336: I. Find the square of √a + √b and -√a-√b.
II. Use the result of part I. to find the square roots of 10+√84.
Click here to see answer by robertb(5830)

Question 1016395: A chemist has two solutions of H2SO4. One has a 40% concentration and the other has a 25% concentration. How many liters of each solution must be mixed to obtain 128 liters of a 34% solution?
Thank you.
--Will
Click here to see answer by josgarithmetic(39616)

Question 1016472: How much pure gold added to 180 ounces of 14-karat gold (14/24 pure) will make 16-karat gold.
Need to see the equation, please
Click here to see answer by ankor@dixie-net.com(22740)

Question 1016526: Matt wants to call his mother long dsitance. The rate is 80 cents for the first three minutes and 20 cents forbaxh additional minute. How long can he talk for $3.00 ?
Click here to see answer by fractalier(6550)

Question 1016521: A chemistry teacher needs to mix a 30% salt solution with a 90% salt solution to make 25 qt of a 54% solution. How many quarts of each solution should the teacher mix to get the desired result?
Click here to see answer by ikleyn(52776)

Question 1016335: I. Find the square of √a + √b and -√a-√b.
II. Use the result of part I. to find the square roots of 10+√84.
Click here to see answer by richard1234(7193)

Question 1016562: A pharmacist needs to make 15 ounces of a 20% alcohol solution by mixing together a 10% alcohol solution with 40% alcohol solution. How much of each solution should he use?
Click here to see answer by ikleyn(52776)

Question 1016719: You need a 60% alcohol solution. On hand, you have a 900 mL of a 85% alcohol mixture. How much pure water will you need to add to obtain the desired solution?
A) Write an equation using the information as it is given above that can be used to solve this problem. Use x as your variable to represent the amount of pure water you need to use.

B) You will need
_______mL of pure water
to obtain
_________mL of the desired 60% solution.
Click here to see answer by josgarithmetic(39616)

Question 1016756: Sam mixed 9oz of soil containing 12% clay with 5oz of soil with 14% clay. What is the clay content of the mixture?
Click here to see answer by macston(5194)

Question 1016754: Benny mixed 12 mL of an acidic solution with 11mL of a 41% acidic solution, to make 45% acidic solution. Find the percent acid concentration of the first solution.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1017040: If medicine is mixed three parts water to one part solution,and this made 80ml of medicine how much solution was used?
Click here to see answer by macston(5194)

Question 1017040: If medicine is mixed three parts water to one part solution,and this made 80ml of medicine how much solution was used?
Click here to see answer by josmiceli(19441)

Question 1016978: A lab needs to make 500 litres of 34% solution. They have two acid solutions available to mix; one with 25% acid and one with 50% acid. How many litres of each type should be used to make the 34% solution?

Click here to see answer by ikleyn(52776)

Question 1017066: A merchant mixed 8 lb of a cinnamon tea with 2 lb of spice tea. The 10-pound mixture cost $16. A second mixture included 12 lb of the cinnamon tea and 14 lb of the spice tea. The 26-pound mixture cost $46. Find the cost per pound of the cinnamon tea and of the spice tea.
Click here to see answer by josgarithmetic(39616)

Question 1016911: Fresh cranberries have 99% of water. Partially dried cranberries have 98% of water. Jack picked 100 lbs of cranberries. How much will they weigh after drying?

Click here to see answer by ikleyn(52776)

Question 1017187: How many cubic centimeters of a solution that is 20% acid and of another solution that is 45% acid should be mixed to produce 100cm^3 of a solution that is 30% acid?
Click here to see answer by ikleyn(52776)

Question 1017193: There are some rabbits and some hutches. If eight rabbits are put in each hutch, one rabbit is left over. If eleven rabbits are put in each hutch, one hutch is left empty. How many rabbit hutches are there, and how many rabbits are there?
Click here to see answer by macston(5194)

Question 1017200: How much 12% acid must be added to 2 gallons of pure water to get a mixture that is 7%.
Click here to see answer by stanbon(75887)

Question 1017220: A snack mix is made from peanuts that cost $3.10 per pound and caramel popcorn that cost $2.30 per pound. The mixture costs $2.80 per pound. Does the mixture contain more peanuts or more popcorn?
Click here to see answer by Theo(13342)

Question 1017152: A merchant blends tea that sells for $4.20 a pound with tea that sells for $2.40 a pound to produce 120 lb of a mixture that sells for $3.45 a pound. How many pounds of each type of tea does the merchant use in the blend?
Click here to see answer by ikleyn(52776)

Question 1017259: How much of a 4% acid solution should be
mixed with 36 liters of an 8% acid solution
to create a mixture that is 7% acid?

Click here to see answer by ikleyn(52776)

Question 1017215: If you have four boxes, all identical looking, but all with different weights, can you order them from the lightest to the heaviest using balancing scales no more than 5 times? Yes or No.
Click here to see answer by Edwin McCravy(20054)

Question 1017265: Joan mixed 11 mL of an acidic solution with 8 mL of a 42% acidic solution, to make a 43% acidic solution. Find the percent acid concentration of the first solution.
Click here to see answer by josgarithmetic(39616)

Question 814694: find a number that is twice as far from 40 as it is from 73
Click here to see answer by Amilasor(2)

Question 1017355: a 30 quart cooling system is checked and found to be filled with a solution that is 40% antifreeze. The desired strength of the solution is 60% antifreeze. How many quarts of solution need to be drained and replaced with pure antifreeze to reach the desired strength?
Click here to see answer by Theo(13342)

Question 1017366: In geometry, a convex polygon is a many-sided closed figure, with no sides collapsing in towards the middle. The points where the sides intersect are called vertices and the line segment joining any two nonconsecutive vertices is called a diagonal of the polygon. The number of diagonals of a polygons is given by the formula D=n(n-3)/2 , where n is the number of sides. Complete parts (a) through (c)
A) calculate the number of diagonals in a heptagon.
D=
B) calculate the number of diagonals in a nonagon.
D=
C) if a polygon has 77 diagonals, how many sides does it have?
N=
Click here to see answer by ikleyn(52776)

Question 1017498: Brand X sells 20 oz. bags of mixed nuts that contain 28% peanuts. To make their product they combine Brand A mixed nuts which contain 30% peanuts and Brand B mixed nuts which contain 25% peanuts. How much of each do they need to use?

Click here to see answer by FrankM(1040)

Question 1017708: Kelly, a chemist, was asked to prepare 24 gallons of a solution that is 50% acidic by mixing a solution that is 20% acidic with another solution that is 70% acidic. How much of each solution should she use?
Click here to see answer by stanbon(75887)

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