CBSE Class 10 Answered
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 | 09 Aug, 2017, 09:32: AM
Expert Answer
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 | 09 Aug, 2017, 11:32: AM
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