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Question 941399: how much water should be added to a 20L of a 20% salt solution to dilute it to 15% salt solution
Click here to see answer by stanbon(75887)

Question 941405: Convert the credit card rate to the APR.
Oregon, 1 3/ 4% per month

Click here to see answer by Alan3354(69443)

Question 941500: How much salt needs to be added to 150 lbs of a 4% solution to make a 7% solution?
Click here to see answer by josgarithmetic(39617)

Question 941402: how much salt should be added to a 20L of 20% salt solution to increase it to a 25% salt solution
Click here to see answer by srinivas.g(540)

Question 941477: How many liters of a 4% solution of salt should be added to a 24% solution in order to obtain 680 liters of a 9% solution?
Click here to see answer by josgarithmetic(39617)

Question 941587: The atmospheric pressure p in pounds per square inch (psi) is given by P=14.7e^0.21a
Where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is the altitude? (1mile = 5,280 ft. Round the answer to the nearest foot.
Click here to see answer by macston(5194)

Question 941592: If u multiply a number by five and then subtract negative ten,the difference is negative 35. What is the number?
Click here to see answer by macston(5194)

Question 941631: A chemist needs to create a solution consisting of 70% hydrochloric acid (the other 30% is water). How much pure acid (100% acid solution) should be mixed with 11 mL of a solution with 40% acid in order to get a solution with 70% acid?
Click here to see answer by TimothyLamb(4379)

Question 941588: Find the future value, using the future value formula and a calculator. $889 at 5.5% compounded quarterly for 5 years
Click here to see answer by TimothyLamb(4379)

Question 941705: how many liters of a 8% solution of salt should be added to a 23% solution to obtain 645 liters of a 14% solution
Click here to see answer by lwsshak3(11628)

Question 941688: A mixture is made by combining 1.30lbs of salt and 4.63lbs of water . what is the percentage of salt in this mixture.
Click here to see answer by ankor@dixie-net.com(22740)

Question 941971: how many quarts of pure antifreeze must be added to 8 quarts of a 10% solution to obtain a 20% antifreeze solution?
Click here to see answer by josmiceli(19441)

Question 942120: how many quarts of pure antifreeze must be added to 6 quarts of a 30% antifreeze solution to obtain a 60% antifreeze solution?
Click here to see answer by TimothyLamb(4379)

Question 942184: What quantity of a 50% acid solution must be mixed with a 20% solution to produce 600 mL of a 40% solution

Click here to see answer by stanbon(75887)

Question 942267: Felix mixes cashews and pecans together to make a nut mixture. the weight of the pecans is three times the weight of the cashews. The mixture weigh 1 pound altogether. How many ounces do the cashews weigh?
Click here to see answer by stanbon(75887)

Question 942323: How much water must be evaporated from 17 qt of a 50% antifreeze solution to produce an 85% solution?
Click here to see answer by lwsshak3(11628)

Question 942333: Two planes are 1410 mi apart and are traveling toward each other. One plane is traveling 120 mph faster than the other plane. The planes pass each other in 1.5 h. Find the speed of each plane.
Click here to see answer by lwsshak3(11628)

Question 942336: How many pints of pure antifreeze must be added to 20 pints of a 15% antifreeze solution(antifreeze and water) to make a 40% antifreeze solution?
Click here to see answer by lwsshak3(11628)

Question 942359: how man gallons of a 20% acid solution must be mixed with 6 gallon of a 30% acid solution to make a 22% solution.
Click here to see answer by lwsshak3(11628)

Question 942331: A 25% salt solution is mixed with a 55% salt solution. Which of the following are not possible for the percent concentration of the resulting solution? (Select all that apply.)
A. 65%
B. 40%
C. 25%
D. 55%
E. 10%
Click here to see answer by lwsshak3(11628)

Question 942373: A chemist has on hand a supply of a 40% methyl alcohol solution and a 55% methyl alcohol solution. How much of each solution should be mixed to produce 2 L of a 43% solution?
I had tried singling out each variable but I'm not sure where I went wrong (my answers did not match up with the answer book, and I'd like to know how to get the correct answer)
Click here to see answer by Alan3354(69443)

Question 942381: A photographer wants to mix 14 liters of a 7% acetic acid solution with a 12% solution to get a 9% solution. How many liters of 12% solution must be added?

Click here to see answer by josgarithmetic(39617)

Question 942496: A state's license plates consist of three letters followed by three numerals, and 250 letter arrangements are not allowed. How many plates can the state issue?

Click here to see answer by Alan3354(69443)

Question 942602: Abdul's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Abdul
$4.25
per pound, and type B coffee costs
$5.90
per pound. This month's blend used twice as many pounds of type B coffee as type A, for a total cost of
$337.05
. How many pounds of type A coffee were used?

Click here to see answer by josgarithmetic(39617)

Question 942628: Solids are what

Click here to see answer by Alan3354(69443)

Question 942679: a grocer mixes pecans priced at $4.50 per pound with almonds priced at $5.25 per pound. how many pounds of each type of nut should he use to have a total mixture of 14 pounds priced at $4.80 per pound?
Click here to see answer by josgarithmetic(39617)

Question 942753: a chemist mixes 8 l of 40% acid solution with some unknown quantity of 70% solution to get a 50% solution. How much 70% solution is used ?
Click here to see answer by lwsshak3(11628)

Question 942816: I have 65 gallons of H2O, 35 gallons of 9% sulfuric acid.
How much of the sulfuric mix do I have to add to the H2O to get a 0.26% concentration
Click here to see answer by Alan3354(69443)

Question 942918: If I had 20,000L of 28% HCL how much water would I need to dilute it to 15% HCL
Click here to see answer by TimothyLamb(4379)

Question 942883: How much water should be added to 6 gallons of a solution that is pure acid to obtain a 15% soulution?
Click here to see answer by lwsshak3(11628)

Question 942883: How much water should be added to 6 gallons of a solution that is pure acid to obtain a 15% soulution?
Click here to see answer by Alan3354(69443)

Question 943103: Gold is alloyed with different metals to make it hard enough to be used in jewelry. The amount of gold present in a gold alloy is measured in 24ths called karats. 24-karat gold is 2424 or 100% gold. Similarly, 18-karat gold is 1824 or 75% gold. How many ounces of 18-karat gold should be added to an amount of 12-karat gold to make 4 ounces of 14-karat gold?

Click here to see answer by lwsshak3(11628)

Question 943106: A chemist has two solutions of HC1. One has a 40% concentration and the other has a 25% concentration. How many liters of each solutions must be mixed to obtain 129 liters of 38% solution.
Click here to see answer by ptaylor(2198)

Question 943189: a gold merchant has some 12 carat gold (12/24 pure gold) and some 22 caret gold ( 22/24 pure gold). How many grams of each could be mixed to get 25 grams of 15 carat gold?

I'm stuck so far I have 12 caret gold would be x and 22 caret is y but i'm just confused on how to get to 3 equations I know how to solve it but getting the equations confuse me ..
Click here to see answer by stanbon(75887)

Question 943281: You need 1275 mL of a 15% alcohol solution. On hand, you have a 10% alcohol mixture and a 95% alcohol mixture. How much of each mixture will you need to obtain the desired solution?

Click here to see answer by TimothyLamb(4379)

Question 943344: A cup has a capacity of 290ml.it takes 63 cups to fill a bucket.find the approximate capacity of the bucket in litres.
Click here to see answer by josgarithmetic(39617)

Question 943484: How much water must be evaporated from 17 qt of a 75% antifreeze solution to produce an 85% solution?

Click here to see answer by lwsshak3(11628)

Question 943282: root(7)(ab^5)*root(4)(a^6 b)
Click here to see answer by lwsshak3(11628)

Question 943482: Find the cost per ounce of a sunscreen made from 110 oz of lotion that cost $3.45 per ounce and 90 oz of lotion that cost $13.05 per ounce.
Click here to see answer by macston(5194)

Question 943552: Q.28 two vessels contain mixtures of milk and water in the ration 8:1 and 1:5 respectively. find how much be drawn from each vessel to fill a third vessel of of capacity 21 gallons in order that the resulting mixture may be half milk and half water is-

Click here to see answer by ptaylor(2198)

Question 943586: The measure of the largest angle in a triangle is forty degrees larger than the smallest angle. The measure of the middle angle is twice as large as the smallest angle. Find the measurement of the three angles in the triangle.
Click here to see answer by TimothyLamb(4379)

Question 943525: Our batch requires three times more Component A than Component B. In the solution that Component B is in (Solution B), Component B is 50% concentrated. Fifty pounds of Solution B is added to the batch. How much of Component A is needed?
Click here to see answer by josgarithmetic(39617)

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