Question

A car starts from a place at 6 a.m. another car starts from the same place at 8 a.m. both the cars are moving in the same direction on a straight road . The speed of the second car is 20 km/h more than that of the first car.if the second car catches up with the first car at 2 p.m., find the speed of each car.

Answer 1

Answer:

car A= 60km/hr car B=80 km/hr

Step-by-step explanation:

carA started at 6 am and meet second car at 2 pm

:. it travelled for 8hrs

carB started at 8 am and meet first car at 2 pm

:. it travelled for 6 hrs

let speed of car A = X km/hr

then speed of carB=X+20km/hr

they both travelled same distance

distance=speed×time

8×x=6(X+20)

8x=6x+120

8x-6x=120

2x=120

X=60

:.speed of car A = 60 km/ hr

speed of car B = x+20=80km/hr