Sea water

Seawater contains about 5% salt. How many dm3 of distilled water must we pour into 39 dm3 of seawater to get water with 1.6% salt?

Correct answer:

V =  82.88 dm3

Step-by-step explanation:

V1=39 dm3   5 %   V1 = 1.6 %   (V1+V) 5/100   V1 = 1.6/100   (V1+V)  5 V1=1.6 (V1+V) 5 39=1.6 (39+V)  1.6V=132.6  V=1.6132.6=82.875  V=8663=82.875=8663 dm3=82.88 dm3



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