Which equation can be used to solve this problem? How much water must be evaporated from 50 gallons of a
20% brine solution (salt water solution)
to get a 30% brine solution?

0.2(50) - E = 0.3(50 - E)

0.2(50) - E = 0.3(50)

0.3(50) = 0.2(50 - E)

0.2(50) = 0.3(50 - E)