What will be the duration of time ?

Question

A picnic bus starts at 8 am at constant speed 40 km/hr for 3 hours.The picnic place is at a distance of 120 km.The whole route is a straight path. After some travelling rain starts due to which the driver decreases the speed to 20 km/hr upto the time of raining. When rain fall stops he increases his speed to 1.5 times and reach the destination on time.
What will be the duration of time ?

Answer 1

As per the starting Two statement
A picnic bus starts at 8 am at constant speed 40 km/hr for 3 hours.The picnic place is at a distance of 120 km. what-will-be-the-duration-of-time

If the distance is 120 Km then in first 3 hours the bus should reached at the destination.
As it was running as 40km/hr speed for 3 hour.

duration of time Should be 3 hours.