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Question 995463: How much of a 12% saline solution should be mixed with a 4% saline solution to obtain 40 milliliters of a 6% saline solution? Use a system of equations and the elimination method to solve the problem.
Click here to see answer by stanbon(75887)

Question 995457: a pharmacist needs 500 milligrams of a 20% phenobarbital solution but has only 5% and 25% phenobarbital solutions available. find out how many milligrams of each she should mix to get the desired solution?
Click here to see answer by stanbon(75887)

Question 995506: In a class,the ratio of boys to the girls is 7to8 Which part of the whole class is girls?
Click here to see answer by stanbon(75887)

Question 995511: Find the cost per ounce of a mixture of 280 oz of a cologne that costs $8.50 per ounce and 560 oz of a cologne that costs $4.00 per ounce.
Click here to see answer by addingup(3677)

Question 995574: You make a 2-quart pitcher of fruit punch at home. It is a 12% sugar solution in the pitcher. You pour yourself an 8 oz. glass. What is the concentration of sugar in the glass?
Click here to see answer by vleith(2983)

Question 995600: A solution contains 15% hydrochloric acid. How much water should be added to 50 milliliters of this solution to dilute it to a 2% solution?
I need how to solve this problem using a quantity rate table, I can solve it once I have the table filled out I'm just having issues determining where each piece of information goes in the table.
Click here to see answer by josmiceli(19441)

Question 995832: a 20% dye solution is to be mixed with 60% dye solution to get 240L of a 50% solution. how many liters of the 20% and 60% will be needed?
Click here to see answer by stanbon(75887)

Question 995801: A dairy keeps two kinds of milk on hand, skim milk has 0.2% butterfat and whole milk has 3.4% butterfat. How many gallons of each type of milk does a company need to produce 220 gallons of 1% milk for a gorcery store?
Click here to see answer by ankor@dixie-net.com(22740)

Question 995803: One brand of cleaner used to etch concrete is 25% acid. A stronger industrial cleaner is 50% acid. How many litres of each cleaner should be mixed to produce 20 litres of a 40% acid solution?
Click here to see answer by josgarithmetic(39616)

Question 995874: Find the concentration of a solution of acid that was made by adding 75mL of a 20% acid concentration to 50mL of a 40% acid concentration?
Click here to see answer by Theo(13342)

Question 995909: How many gallons of a 25 percent saline solution and a 35 percent solution must be mixed together to get 220 Gallons of 30 percent saline solution.
If you could send me the equation you plunged the info into as well it would be greatly appreciated. Thanks
Click here to see answer by stanbon(75887)

Question 995949: a gardener has 80 pounds of 8 % nitrogen fertilizer and an unlimited supply of 20 % nitrogen fertilizer. he wishes to mix the fertilizer so he gets a mixture that is 12 % nitrogen. how many pounds of 20 % fertilizer should he mix in?
Click here to see answer by josgarithmetic(39616)

Question 995989: An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing
100 grams of an alloy that contains 28% copper with 28 grams of pure copper.
How many grams of copper is in the resulting mixture?
What percent of the resulting mixture is copper?
Click here to see answer by josgarithmetic(39616)

Question 996031: If an object is propelled upward from a height of 64 feet and initial velocity of 96 ft./s that it's height after T seconds is given by the equation H equals -16t^2+96t+64
Click here to see answer by Alan3354(69443)

Question 996257: One number is four more than another number. If five times the smaller number is equal to three times the larger number, find the numbers.
Click here to see answer by fractalier(6550)

Question 996200: A chemist mixes 50 milliliters of a solution that is 20% acid with 75 milliliters of a solution that is 45% acid. Answer the questions below. Do not do any rounding.
A) How many milliliters of acid are in the resulting of mixture?
B) What percentage of the resulting mixture is acid?

Click here to see answer by Alan3354(69443)

Question 996520: Two liters of 40% alcohol are mixed with 4 liters of another alcohol to form a 50 % alcohol solution. what is the strength of the added alcohol?
Click here to see answer by fractalier(6550)

Question 996547: How many liters of a 52% citrus solution must be added to 30 liters of a 24% citrus solution to make a 40% citrus solution?
Click here to see answer by josmiceli(19441)

Question 996494: A silver dollar, an alloy of silver and copper, is 7.5% copper by weight. How many grams of pure copper should be used to prepare a 200 grams of a copper-silver alloy that is 10% copper by weight?
Click here to see answer by josgarithmetic(39616)

Question 996622: A pharmacist needs to make 200 mL of a 10% hydrogen peroxide solution. She will make it from some 8% hydrogen peroxide solution and some 16% hydrogen peroxide solution. How much of the 8% solution and 16% solution should she use?
Click here to see answer by josgarithmetic(39616)

Question 996609: bunson beaker has 150 grams of a 50% salt solution. how many grams of water must be added to obtain a 20% salt solution

Click here to see answer by josgarithmetic(39616)

Question 996636: How many liters of pure acid and how many liters of a 25% acid solution should be mixed to get 10 liters of a 40% acid solution?
Click here to see answer by stanbon(75887)

Question 996684: The Royal Fruit Company produces two types of fruit drinks. The first type is 45% pure fruit juice, and the second type is 95% pure fruit juice. The company is attempting to produce a fruit drink that contains 90% pure fruit juice. How many pints of each of the two existing types of drink must be used to make 120 pints of a mixture that is
90% pure fruit juice?
Click here to see answer by josgarithmetic(39616)

Question 996841: A chemist named Mr. Nobel has 20 Milliliters of a solution that is 40% acid. He wants to increase the acid content of the solution to make it a 60% acid solution. How many milliliters of pure acid should he add to the solution?
Click here to see answer by josgarithmetic(39616)

Question 996908: what quantity of a 20% alcohol solution must be mixed with a 5% alcohol solution to obtain 400mL of a 10% alcohol solution?
Click here to see answer by josgarithmetic(39616)

Question 997040: a beaker holds 150mL. How many gallons will this be?
Click here to see answer by MathLover1(20849)

Question 997131: Solution A is 10% sugar while solution B is 30% sugar. A student wants to have a 50 liter of solutions A and B that is 18% sugar. How many liters of each solution should be used?
Click here to see answer by ikleyn(52776)

Question 997136: A pound of alloy of lead and nickel weighs 14.40 ounces in water, where lead losses 1/11 of its weight and nickel losses 1/9 of its weight. How much of each metal is in the alloy?
Click here to see answer by Boreal(15235)

Question 997155: One summer evening 1600 concert tickets were sold for the Fairmont Summer Jazz Festival. Tickets cost $25 for covered pavilion seats and $15 for lawn seats. Total receipts were $34,000; ow many lawn and pavilion seats were sold?
Click here to see answer by ikleyn(52776)

Question 997185: steel that is 5% nickel and 95% iron is mixed with another batch that is 2% nickel and 98% iron to make 3 tons of steel that is 4% nickel and 96% iron. how many tons of each original batch was used?
I'm confused of which formula to use....
Click here to see answer by Boreal(15235)

Question 997311: A milkman ordered his assistant to first remove 3 liters out og he 8 liters of a solution of milk and water and then add 3 liters of water to it.Thinking that it would not make any difference , the lab assistant first added 3 liters of water and then removed 3 liters of the solution. Find the ratio of the expected concentration of the milk to actual concentration of the milk?
1)1:1 2)21:52 3)55:64 4)605:512 5)5:11
Click here to see answer by KMST(5328)

Question 997356: How much pure gold (24 karat) must be mixed with 60% gold to get 20 grams of 75% pure gold? I'm not necessarily asking for the answer but how to set up the equation to solve for it.
Click here to see answer by josmiceli(19441)

Question 997462: Eighty ounces of a 50% gold alloy are mixed with 20 oz of a 10% gold alloy. Find the percent concentration of the resulting gold alloy.
Click here to see answer by lwsshak3(11628)

Question 997795: A grocer wants to mix two kinds of nuts. One kind sells for $2.20 per pound, and the other sells for $2.60 per pound. He wants to mix a total of 28 pounds and sell it for $2.40 per pound. How many pounds of each kind should he use in the new mix?
Click here to see answer by josgarithmetic(39616)

Question 997785: 1/4 as much sugar as flour. If it uses 8 cups of flour, then how much sugar?
Click here to see answer by fractalier(6550)

Question 997814: What quantity, x, of a 30% acid solution must be mixed with 1700 mL of a 55% acid solution to produce a 47% solution

Click here to see answer by ikleyn(52776)

Question 997874: if a 3% solution is used at 30 ml per gallon. how much 97% solution would be used per gallon to reduce it down to 3% solution?
Click here to see answer by josgarithmetic(39616)

Question 997956: A boat travels 16 miles due north in 2 hours and 24 miles due west in 2 hours what is the average speed of the boat?
Click here to see answer by addingup(3677)

Question 998080: at a cosmetics company, 40L of pure aloe cream are mixed with 50L of a moisturizer that is 64% aloe. what is the percent concentration of aloe in the resulting mixture?
Click here to see answer by josgarithmetic(39616)

Question 998261: How many cubic centimeters of pure hydrochloric acid should be added to 20 cubic centimeters of a 30% solution of hydrochloric acid to obtain a 50% solution?
Click here to see answer by lwsshak3(11628)

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