Question

places A And B are 100 Km apart on a highway.one car starts from A and another from B at 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 hours.what are the speed of the two car

Answer 1

Answer:

Step-by-step explanation:

Speed of car that starts from place A is x

Speed of car that starts from place B is y

T=D/S

Car starting from A

5=100/x

5x=100

Car starting from B

5=100/y

5y=100

5x-5y=100

5(x-y)=100

x-y=20.....(1)

If the cars travel towards each other, then

x+y=100......(2)

From(1)

x=20+y......(3)

Substituting (3) in (2)

20+y+y=100

20+2y=100

2y=100-20

2y=80

y=80/2

y=40

Substituting y in (2)

x+40=100

x=100-40

x=60

The speed of car starting from place A is 60 km/hr.

The speed of car starting from place B is 40 km/hr.

Hope it helps you!!!