Question

A and b travel the same distance at a speed of 9 km/hr and 10 km/ hr respectively. If a takes 36 minutes more than b, the distance travelled by each is

Answer 1

Answer:

let the time taken  by B be x min = x\60 hrs

speed of B = 10 km\hr

distance =x\60 ×10

              = x\6 km

let the time taken by A be (x+36) min =(x+36)\60 hrs

speed of A = 9 km\h

distance = (x+36)\60 × 9

              = 3 x +108\20

A\Q ,we get

    x\6 = 3 x +108\20

⇒   x\3 = 3 x +108\10

⇒   10 x = 9 x + 324

⇒   10 x _ 9 x = 324

⇒    x      =   324 km

Explanation: