Question

places A and B are 100 km apart on a highway .One car starts from A and another from B at the same time .If the cars travel in the same direction at different speeds,they meet in 5 hours .If they travel towards each other, they meet in 1 hour .What are the speeds of the two cars

Answer 1

Step-by-step explanation:

Let the speed of car at A be x kmph

and the speed of car at B be y kmph

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

Answer 2

Answer:

It is the correct answer.

Step-by-step explanation:

Hope this attachment helps you.