Question

A train runs for 3 hr at a speed of 65 km per hr and for next 2 hr speed of 70 km per hr .find the average speed of of the train for the 5 hr jorney
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Answer 1

Answer:

67km/hr

Step-by-step explanation:

Given : 1.speed of train for 3 hours =65 km/hr

2. speee of train for 2 hours =70km/hr

To find out : average speed of train for 5 hours=?

Solution :

According to first condition

Distance(1)=speed×time

=65×3

=195km

According to the second condition

Distance(2)=speed×time

=70×2

=140km

Total distance =distance(1)+distance(2)

=195+140

=335km

Average speed =total distance

time

=335

5

average speed =67km/hr