Hudman57
23.07.2019 •
Mathematics
How many liters of water should be evaporated from 60 liters of a 28% salt solution so that the remaining solution contains 32% salt?
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Ответ:
water - water = water
0.72*60 - x = 0.68(60-x)
72*60 - 100x = 68*60 - 68x
-32x = -4*60
x = (1/8)60
x = 7.5 liters (amt of water to evaporate)
Ответ:
i would RV
Step-by-step explanation:
but sorry if its wrong