The Cup Equation
Geometry
Level
2
There was some water in a rectangular container measuring 25 centimeters by 20 centimeters. Jason poured some of the water into cups and the water level fell by 2 centimeters. If he poured 100 millimeters of water into each cup, how many cups did he use? (1liter = 100 centimeters)
The answer is 10.
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1 solution
So, let’s assume the 2 centimeters is our height. Then you just do 25 times 20 times 2 which equals 1000. This means he have 1000 centimeters cubed divided by 100. This equals 10 cups!