Question

PointA to point B are 90km apart from each other on a high way .A car start 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 direction, they meet in 9/7hours .find their speeds.

Answer 1

Answer:

case 1- s=d×t

s= 90×9=81km/h

case2-s=d×t

s=90×9/7=115.71km/h