Points A and B are 90 km apart from each other on a highway. A car starts from A and another from B at the same time. If they go in the same direction they meet in 9 hours and if they go in opposite directions they meet in 9/4 hours. Find their speeds.
Answers
Answer:
let 2nd car be y
moving from point a and b respectively.
speed of car x= x km/h
speed of cary= y km/h
case1: when they move in the same directions.
they meet in 9hrs
distance by x= 9x
distance by y= 9y
=> 9x-9y=90
x-y=10 (1)
case 2: when they move in opposite direction
they meet after 9.7 hrs
distance by x= 9.7x
distance by y= 9.7y
=> 9.7x+9.7y=90
x+y=9.27.. (2)
on equating and solving the two equations, you'll get your desired answer.
I hope it will help you please follow me
Let 1st car be x
let 2nd car be y
moving from point a and b respectively.
speed of car x= x km/h
speed of cary= y km/h
case1: when they move in the same directions.
they meet in 9hrs
distance by x= 9x
distance by y= 9y
=> 9x-9y=90
x-y=10 (1)
case 2: when they move in opposite direction
they meet after 9.7 hrs
distance by x= 9.7x
distance by y= 9.7y
=> 9.7x+9.7y=90
x+y=9.27.. (2)