Three glasses

Three glasses of different colors have different volumes. Red 1.5 liter is filled from 2/5, blue 3/4 liter is filled from 1/3, and the third green 1.2 liter is empty. Pour green glass 1/4 of the contents from the red glass and 2/5 of the content from the blue one. Express a fraction of how much the green glass is filled with.

Correct result:

z =  0.2083

Solution:

C=1.5 l M=3/4=34=0.75 l Z=1.2 l  V=C 25 14+M 13 25=1.5 25 14+0.75 13 25=14=0.25 l  z=VZ=0.251.2=524=0.2083



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