Answer:
48
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
hours= 2.5
minutes= 150
so average rate of reading=
=total read pages / totaltime
=100+100 / 1.66+2.5
=200 / 4.16
=48.076