Cooling liquid

Cooling liquid is diluted with water in a ratio of 3:2 (3 parts by volume of coolant with 2 volumes of water). How many volumes of coolant must be prepared for a total 0.7 dm3 (liters) of the mixture?

Correct result:

x =  0.42 l

Solution:

d=0.7/(3+2)=750=0.14 l x=3 d=3 0.14=2150=2150 l=0.42 l



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