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Question 795333: How many liters each of a 15% anrifreeze solution and a 30% antifreeze solution must be mixed to make 6 liters of a 20% antifreeze solution?
Click here to see answer by wilft1(217)

Question 795557: A baseball is thrown straight upward with an initial speed 64ft/sec. The number of feet, s, above the ground after t seconds is given by the equation, s=-16t^2+64t.
a)When will the baseball be 48 ft above the ground?
b)When will it hit the ground?

Click here to see answer by Alan3354(69443)

Question 795689: How many gallons of cream that is 24% butterfat must be mixed with milk that is 2% butterfat to get 22 gallons of milk containing 4% butterfat?
Click here to see answer by josgarithmetic(39617)

Question 795682: 7l of an acid solution was mixed with 3l of a 15% acid solution to make a 29% acid solution. What is the percent concentration of the first solution?
Click here to see answer by josgarithmetic(39617)

Question 795639: how much of a 30% salt solution must be mixed with 70 gallons of a 12% salt solution to obtain a solution that is 20% of salt?
Click here to see answer by tommyt3rd(5050)

Question 795829: A chemist has two solutions of HCL. One has a 40% concentration and the other has a 25% concentration.
How many liters of each solution must be mixed to obtain 124 liters of a 35% solution?
___L of the 40% solution and _____ liters of the 25% solution must be mixed to obtain a 35% solution of HCL
(Round to the nearest tenth, if necessary)
Click here to see answer by stanbon(75887)

Question 796154: to make a special mix the owner of a nut stand wants to combine cashews that sell for $8.00 per pound with walnuts that sell for $6.00 per pound to obtain a 50 pound mixture that will sell for $6.50 per pound. How much of each nut must be in the mixture?
Click here to see answer by josgarithmetic(39617)

Question 795826: A pharmacist wishes to mix a solution that is 6% Minoxidil. She has on hand 60 ml of 2% solution and wishes to add some 8% solution to obtain the desired 6% solution. How much 8% solution should she add?
Click here to see answer by stanbon(75887)

Question 796357: What quantity of a 75% acid solution must be mixed with a 45% solution to produce 400 mL of a 60% solution?
Click here to see answer by Alan3354(69443)

Question 796359: A 620-gram salt-and-water solution contains 50 g of salt. This mixture is left in the open air, and 120 g of water evaporates from the solution. What is the percent concentration of salt in the remaining solution?
Click here to see answer by stanbon(75887)

Question 796392: Five gallons of a dark green latex paint that is 20% yellow paint are combined with a lighter green latex paint that is 40% yellow paint. How many galloons of the lighter green paint must be used to create a green paint that is 25% yellow paint?
.20x+.40(x+5)=1.25
.20x+.40x+2=1.25
.60x+2=1.25
.60x=.75
x=1.083????
Click here to see answer by Alan3354(69443)

Question 796469: A chemist wants to make a 50ml of a 16% acid solution by mixing a 13% acid solution and an 18% acid solution. how many milliliters of each solution should the chemist use.
.13(50-x)+.18x= 8
6.5-13x+.18x=8
6.5+5x=8
-6.5
5x=1.5
x=3
What am I doing wrong with these charts? i am guessing I am putting everything in the wrong place???
Click here to see answer by Alan3354(69443)

Question 796480: How many gallons of a 8% salt solution must be mixed with 60 gallons of a 12% solution to obtain a 10% solution?
Click here to see answer by Alan3354(69443)

Question 796590: How much 30% acid solution should be added to 10% acid solution to make 100 ml of a 12% acid solution?
Click here to see answer by stanbon(75887)

Question 796647: A 90kg solution has 10% salt. How much water must be evaporated to leave 20% salt?
Click here to see answer by josgarithmetic(39617)

Question 796663: Philip can dry mop a wet basketball court in 45 mins; while James can do the same job in 30 mins. They first worked together on the job for 10 mins and then Philip was transferred to mop another court. How many more mins did it take James to finish dry mopping the court alone?
Click here to see answer by josmiceli(19441)

Question 796685: how many gallons of a 90% antifreeze solution must be mixed with 70 gallons of 20% antifreeze to get a mixture that is 80% antifreeze
Click here to see answer by lwsshak3(11628)

Question 796662: Kris mixes plain marshmallows worth 80 cents per gram with flavored marshmallows worth 95 cents per gram to make 120 grams of marshmallows to be sold at 85 cents a gram. How many grams of flavored marshmallows does she use?
Click here to see answer by lwsshak3(11628)

Question 796664: Mrs. Belgian was able to sell 65 boxes of chocolates to a wholesaler for 25,500Php. If a box of chocolates with fruit jelly is worth 300Php and a box of chocolates with assorted nuts is worth 450Php, how many boxes of chocolates with assorted nuts did she sell?
Click here to see answer by Cromlix(4381)

Question 796753: Find how many quarts of 6% butterfat milk and 2% butterfat milk should be mixed to yield 40 quarts of 3% butterfat milk
Click here to see answer by wilft1(217)

Question 797026: Please help me solve this equation
how many gallons of 70% antifreeze solution must be mixed with 10 gallons of 30% antifreeze to obtain a 45% antifreeze mixture
this is how i did it i'm not sure what's wrong with it
X(.7)+10(.3)=.45

Click here to see answer by josmiceli(19441)

Question 796826: Carbon Dating: The amount of carbon 14 remaining in a sample that originally contained A grams is given by: C(t)=A(0.99879)^t where t is time in years. if tests on a fossilized skull reveal that 99.95% of the carbon 14 has decayed, how old, to the nearest 1,000 years, is the skull?
Click here to see answer by ankor@dixie-net.com(22740)

Question 797058: Flo prepared a pan of 12 sourdough pancakes and 15 buttermilk pancakes.how many bananna pancakes should flo add to the pan if she wants the probability of randomely grabbing one banana pancake to be 1/10
Click here to see answer by stanbon(75887)

Question 797144: you are given all the 6% salt solution and pure water you want and you are asked to make up exactly 400 milliliters of a 1.5% salt solution. explain how you would do this.
Click here to see answer by josgarithmetic(39617)

Question 797172: A chemist has two solutions of sulfuric acid.One is a 50% solution, and the other is a 75% solution. How many liters of each does the chemist mix to get 10 liters of a 60% solution?
Click here to see answer by josgarithmetic(39617)

Question 797290: On an architect blueprint, 1 inch corresponds to 4feet, find the length of a wall represented by a line that is 3 7/8 inches long
Click here to see answer by solver91311(24713)

Question 797372: Please help me solve this problem i'm having hared time solving it...thank you

in 1995 u.s. hydroelectric power production reached 311 billion kilowatt-hours.This is 189 billion less than twice the 2009 production level.Find the amount of hydroelectric power produced in 2009
Click here to see answer by solver91311(24713)

Question 797371: A 400-milliliter solution of a fabric dye contains 8 ml of hydrogen peroxide. What is the percent concentration of the hydrogen peroxide?
Click here to see answer by josmiceli(19441)

Question 797403: a solution contains 60 oz of water and 15 oz of acid. if a 60% acid solution results from water evaporation, then how many ounces of water have evaporated
Click here to see answer by josmiceli(19441)

Question 797407: a certain solution of salt water is 15% salt and weighs 35 pounds. how much salt must be added to produce a solution that is 25% salt
Click here to see answer by josmiceli(19441)

Question 797420: an automobile radiator is full of a 20% antifreeze solution. if its capacity is 12 quarts, how many quarts must be replaced by a 95% solution to give 12 quarts of a 70% solution
Click here to see answer by solver91311(24713)

Question 797266: if a dairy has 475 pounds of milk having a content of 2.5% butterfat how many pounds of skimmed milk(with no butterfat)must he remove to have milk with a content of 4% butterfat

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

Question 797520: 6.75b + 5c = 285
how do I solve this?
Click here to see answer by jerryguo41(197)

Question 797707: A merchant has 4 pounds of mixed nuts that cost $40. He wants to add peanuts that cost $1.70 per pound and cashews that cost $4.30 per pound to obtain 60 pounds of a mixture that costs $2.20 per pound. How many pounds of peanuts are needed?
Click here to see answer by josmiceli(19441)

Question 797857: store has nine mice and you want five. how many combinations can you get?
Answer given was 9/5(9-5)=126
Not sure if it is right and how did they get that
Click here to see answer by Alan3354(69443)

Question 797925: A 40L solution of salt water contains 15% salt. What is the least amount of water that can be added to form solution that is no more than 5% salt?
Click here to see answer by stanbon(75887)

Question 797976: How many liters of a 90% acid solution must be mixed with a 15% acid solution to get 525 L of a 80% acid solution?
Click here to see answer by josgarithmetic(39617)

Question 797963: A chemist needs 2 liters of an 18% acid solution. He has two solutions, A and B, to mix together to form the solution. Acid solution A is 10% acid and acid solution B is 15% acid. Can the chemist form the needed 18% acid solution? (Verify by calculation.) If the chemist locates a 20% acid solution, how much would have to be mixed with the 10% solution to obtain the needed 2-liter 18% solution?
Click here to see answer by josgarithmetic(39617)

Question 798089: A radiator contains 6 quarts of fluid, 15% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 60% antifreeze? (Round your answer to two decimal places.)
Click here to see answer by josgarithmetic(39617)

Question 798103: A radiator contains 5 quarts of fluid, 20% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 40% antifreeze?
Click here to see answer by josgarithmetic(39617)

Question 798463: how much of an alloy that is 20% copper should be mixed with 600 ounces of an alloy that is 60% copper in order to get an alloy that is 30% copper
Click here to see answer by josgarithmetic(39617)

Question 798491: A candy maker wants to make a 60-pound mixture of two candies to sell for $2 per pound. If black licorice bits sells for $1.90 per pound and orange gumdrops sell for $2.20 per pound, how many pounds of each should be used?
Click here to see answer by josgarithmetic(39617)

Question 798504: how many liters of a 50% acid solution must be mixed with a 20% acid solution to get 270 liters of a 40% acid solution
Click here to see answer by mananth(16946)

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