In the afternoon, a student read 100 pages at the rate of 60 pages/h. In the eve

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Question
In the afternoon, a student read 100 pages at the rate of 60 pages/h. In the evening, when she was tired, she read 100 more pages at the rate of 40 pages/h . What was her average rate of reading in pages per hour?
Options
A. 48
B. 50
C. 60
D. 70

Correct Answer

48

Explanation

Required average rate of reading
= 2AB / (A + B) = 2 x 60 x 40 / (60 + 40)
= (2 x 60 x 40)/100 = 48 page/h

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