Two cars are moving in the same direction with the same speed 30 km/h. They are separated distance of 5 km, the speed of a car moving in the opposite direction it meets these two cars a interval of 4 minutes, will be (1) 40 km/hr (2) 45 km hr (3) 30 km/hr (4) 15 km/hr
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Answer:
45km/hr
Explanation:
let the speed of car be X
therefore
the relative velocity of both car= (30+X)km/hr
distance between the two cars=5km
time taken to meet= 5min=1/15hr
we know that
speed= distance/time
30+X=5/1/15
30+X=75
X=45km/hr
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