Question

Two cities A and B are at a distance of 200 kilometres apart along a highway.A car from A and a car from B start together.If they move in the same direction they meet in 10 hours.If they move towards each othe Two cities A and B are at a distance of 200 kilometres apart along a highway.A car from A and a car from B start together.If they move in the same direction they meet in 10 hours.If they move towards each other they meet in 2 hours.Assume that car from B is faster.Find the speed of car from A and B. r they meet in 2 hours.Assume that car from B is faster.Find the speed of car from A and B.

Answer 1

Answer:

When 2 bodies travel towards each other, the relative velocity is the sum of two and when 2 bodies travel in the same direction, the relative velocity is the difference of two.

let velocity of a car starting from A=aKm/hr

and velocity of a car starting from B=bKm/hr

So,

when they move towards each other,

relative velocity=a+b

when they move in the same direction,

relative velocity=a−b

velocity=

Time

Distance

So,

a+b=

1

100

and a−b=

5

100

a+b=100 and a−b=20

adding two equation,

2a=120

a=60Km/hr

and b=100−60

=40Km/hr

Thus , speed a two cars will be 60Km/hr and 40Km/hr

Answer 2

Answer:

• bathroom is the society of india