A taken 3 hours more than B to walk 30 km. But if A doubles his pace, he is ahead of B by hours. Find their speed of walking.

### Asked by Topperlearning User | 9th Aug, 2017, 09:32: AM

Let speed of _{} km/hr.

and _{} km/hr.

Therefore according to the question we get two equation.

_{} ……..(1)

_{} ……..(2)

Now Let

Then equation (1) and (2) becomes

_{}

or _{} …….. (3)

_{} …….. (4)

Adding (3) and (4) we get

_{}

Putting this value of A in (3) we get

_{}

_{ But }

_{ and }

Hence speed of A is km/hr and B is 5 km/hr.

### Answered by | 9th Aug, 2017, 11:32: AM

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