Container with water

The weight of a container with water is 2.48 kg. If the cast 75% water, the container with water has a weight of 0.98 kg. Determine the weight of the empty container. How much water was originally in the container?

Correct result:

m =  0.48 kg
v =  2 kg

Solution:


m + v = 2.48
m+(1-75/100)•v = 0.98

m+v = 2.48
100m+25v = 98

m = 12/25 = 0.48
v = 2

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