A student finishes the first half of an exam in the time it takes him to finish the second half. If the entire exam takes him an
hour, how many minutes does he spend on the first half of the exam?
1 answer:
Part 1 took 30 minutes and part 2 took 30 minutes
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A = 10x
B = 5x + 20
set them equal to find minutes, x.
10x = 5x + 20
10x - 5x = 20
5x = 20
x = 4
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