Problema Solution
Carlon plans to evaporate a number of gallons of water from 90 gallons of a 15% salt solution to make a 25% salt solution. Which equation can he use to find x, the number of gallons that should be evaporated?
Answer provided by our tutors
The equation used to find x is:
0.25(90 - x) = 0.15*90
22.5 - 0.25x = 13.5