Water container

The container with water weighs 1.48 kg when we cast 75% of the water content of water weight 0.73 kg. How heavy is an empty container?

Correct answer:

x =  0.48 kg

Step-by-step explanation:

r=100%−75%=1−10075​=0.25  x+y=1.48 x+r⋅ y=0.73  x+r⋅ (1.48−x)=0.73 x+0.25⋅ (1.48−x)=0.73  0.75x=0.36  x=0.750.36​=0.48=0.48 kg  x=2512​=0.48   Verifying Solution:  y=1.48−x=1.48−0.48=1 kg

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You need to know the following knowledge to solve this word math problem:

algebrasolid geometrybasic operations and conceptsUnits of physical quantitiesGrade of the word problem

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