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After an ice began to melt out from the freezer, in the firs

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by Max@Math Revolution » Mon May 02, 2016 10:44 pm
After an ice began to melt out from the freezer, in the first hour lost 3/4, in the second hour lost 3/4 of its remaining. If after two hours, the volume is 0.5 cubic inches, what is the original volume of the cubic ice, in cubic inches?

A. 2.5
B. 3.0
C. 4.0
D. 6.5
E. 8.0

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by Max@Math Revolution » Wed May 11, 2016 7:08 pm
If we consider the original volume of an ice to be x, then we get x(1-3/4)(1-3/4)=0.5. From this, we get x(1/4)(1/4)=0.5. So, x=8. The correct answer is E.
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