You need a 35% alcohol solution. On hand, you have a 175 mL of a 85% alcohol mixture. How much pure water will you need to add to obtain the desired solution? You will need _______mL...

You need a 35% alcohol solution. On hand, you have a 175 mL of a 85% alcohol mixture. How much pure water will you need to add to obtain the desired solution? You will need _______mL...

Theresa Morgan, a chemist, has a 30% hydrochloric acid solution and a 65% hydrochloric acid solution. How many liters of each should she mix to get 492.188 liters of a hydrochloric acid solution with...

I am stumped by this one! Please help

The Nutty Professor sells cashews for $6.10 per pound and Brazil nuts for $4.50 per pound. How much of each type should be used to make a 29 pound mixture that sells for $5.27 per pound? Round...

You have one type of chocolate that sells for $2.00/lb and another type of chocolate that sells for $8.30/lb. You would like to have 18.9 lbs of a chocolate mixture that sells for $4.30/lb. How much...

You have one type of chocolate that sells for $2.00/lb and another type of chocolate that sells for $8.30/lb. You would like to have 18.9 lbs of a chocolate mixture that sells for $4.30/lb. How much...

word problem write number sentence and solve

Theresa Morgan, a chemist, has a 30% hydrochloric acid solution and a 65% hydrochloric acid solution. How many liters of each should she mix to get 492.188 liters of a hydrochloric acid solution with...

The question has a semi circular driveway but there is a smaller semi circle missing nd I need to find volume of concrete how do i do that

You need a 35% alcohol solution. On hand, you have a 175 mL of a 85% alcohol mixture. How much pure water will you need to add to obtain the desired solution? You will need ______mL...

You need a 55% alcohol solution. On hand, you have a 275 mL of a 40% alcohol mixture. You also have 80% alcohol mixture. How much of the 80% mixture will you need to add to obtain the desired solution...

You need 455 mL of a 60% alcohol solution. On hand, you have a 65% alcohol mixture. How much of the 65% alcohol mixture and pure water will you need to obtain the desired solution? You will...

Pat is 2 years younger than his wife, cindy. Ten years ago,the sum of their ages was 48. how old are they now?

rates question please help.

Help!! Im stuck on this question!

A candy distributor needs to mix a 20% fat-content chocolate with a 50% fat-content chocolate to create 200 kilograms of a 47% fat-content chocolate. How many kilograms of each kind of chocolate must...

yet another one that stumps me! I would appreciate the help on this on

it is a percentage and it is a word problem

Receipts from a concert total is $12,000.The first floor seats $20 and the balcony seats were $15. If the number of those buying each kind of seat had been reversed, the total would have been $10,750...

Luke is selling tickets to a school play. each adult ticket cost $10 each and child's ticket cost four dollars. Luke sold 87 for the total of 678 how many tickets of each type did Luke sell?