Question

In the afternoon, a student read 100 pages at the rate of 60 pages per hour. in the evening, when she was tired, she read 100 more pages at the rate of 40 pages per hour. what was her average rate of reading, in pages per hour

Answer 1

Answer:average rate of reading is 48 pages per hour

Step-by-step explanation:

in afternoon he read 100 pages at the rate of 60 pages per hour.

so time taken  = 100 / 60

                        = 1.66 hours

                       = 100 minutes

in evening time taken by student = 100 / 40

                                                         = 2.5 houers

                                                        = 150 minutes

so average rate of reading =

$\frac{total read pages}{total time}\\\\=\frac{100+100}{1.66+2.5}\\\\=\frac{200}{4.16}\\\\=48.076$

so average rate of reading is 48 pages per hour .