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How many liters of water should be evaporated from 60 liters of a 28% salt solution so that the remaining solution contains 32% salt?

A. 7.5 liters
B. 8.4 liters
C. 43.2 liters
D. 52.5 liters

Respuesta :

hongmi0320
Let w be liters of water to be evaporated from solution
liters of salt in 28% solution

0.28 x 60 = 16.8

16.8 / 60 - w = 0.32

16.8 = 0.32 x (60 - w)

16.8 = 19.2 - 0.32w

0.32w = 2.4

w = 7.5
How many liters of water should be evaporated from 60 liters of a 28% salt solution so that the remaining solution contains 32% salt?

A. 7.5 liters