Question

A Car Crosses A Man Walking At 6Km/Hr The man can see the things up to 450m only in one direction due to fog. He sees the car which was going in the same direction for 4.5 minutes. What is the speed of the car?

Answer 1

Answer:

Man speed = 6km/h = 100m/min

Man speed = 6km/h = 100m/minSince both car and man were moving so relative speed = 450m/4.5min

Man speed = 6km/h = 100m/minSince both car and man were moving so relative speed = 450m/4.5minLet assume car speed be x

Man speed = 6km/h = 100m/minSince both car and man were moving so relative speed = 450m/4.5minLet assume car speed be xSo,

Man speed = 6km/h = 100m/minSince both car and man were moving so relative speed = 450m/4.5minLet assume car speed be xSo,x-100 = 450/4.5

Man speed = 6km/h = 100m/minSince both car and man were moving so relative speed = 450m/4.5minLet assume car speed be xSo,x-100 = 450/4.5Or, x = 200

Man speed = 6km/h = 100m/minSince both car and man were moving so relative speed = 450m/4.5minLet assume car speed be xSo,x-100 = 450/4.5Or, x = 200so Speed of car = 200m/min = 12km/h

Step-by-step explanation:

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Answer 2

Answer:

Let's car speed xkmph

Man speed 6kmph

Rs=(x-6)kmph "same direction

Rd=450/1000=45/100km

Time=4.5/60H

4.5/60=45/100**(x-6)

6=x-6

X=6+6=12kmph Ans.