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.
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
2x/3 + x = 1
x = 3/5
(2/3)(3/5) = 2/5
(2/5)(60) = 24 minutes spent on first half of exam