Question

Two places A and B are 240 Km apart on a highway. A car starts from place A and another from place B at the same time. If the cars move in the same direction at different speeds, they meet in 6 hours. If they travel towards each other they meet in one hour 30 minutes, find the speed of both the cars.

Answer 1

Answer:

when the car travel in same direction Relative Speed is x−y

Dist=100km

t=5 hours

∴ Dist =S×T

100=(x−y)5

x−y=20⟶(I)

when car travel in opp direction Relative Speed is x+y

Dist=100km

t=1 hours

Dist=ST

100=(x+y)1

x+y=100⟶(II)

Solving (I) & (II)

x−y=20

x+y=100

2x=120

x=60km/h

y=40km/h

Speed of the car at A =60 km/h

Speed of the car at B=40 km/h

The difference of speeds is 60−40=20

Step-by-step explanation:

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