word problem

Question

Chris needs to mix a 10% acid solution with a 60% acid solution to create 100 millileters of a 55% solution. How many millileters of each solution must Chris use?

 

Chris must mix? 
______?millileters of 10% solution and
______?millileters of 60% solution.

Answer 1

let x = amount of 10% solution

100-x = amount of 60% solution

 

.1x + .6(100-x) = .55(100)

 

Solve for x to find the amount of 10% solution.

Subtract that from 100 to find the amount of 

60% solution.