A student finishes the first half of an exam in 2/3 the time it takes him to finish the 2nd half.
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A student finishes the first half of an exam in 2/3 the time it takes him to finish the 2nd half.

[From: ] [author: ] [Date: 11-06-06] [Hit: ]
It takes him 24 minutes.-Lets assume it takes him x hour(s) to finish 2nd half of exam.......
if the entire exam takes him an hour, how many minutes does he spends on the first half of the exam.

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Equation:

2/3x+x=60 min.
5/3x= 60 min.
x= 36 min.
take 2/3 of 36

It takes him 24 minutes.

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Let's assume it takes him x hour(s) to finish 2nd half of exam. Then:

2x/3 + x = 1

x = 3/5

(2/3)(3/5) = 2/5

(2/5)(60) = 24 minutes spent on first half of exam
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