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:
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
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