Question

A train started from madurai junction towards Coimbatore at 3pm(time t=0)with velocity v(t)=(20t+50t)km/hr where t is measured in hours.find the distance covered by the train at 5 pm​

Answer 1

total time=2hours

1hour=(20t+50t)km /hr

2hour=2(20t+50t)km/hr

=2×70t

140km