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22.'A' takes 3 hours more than 'B' to walk a distance of 30km. But, if 'A' doubles his speed, he is ahead of 4 km by 3/2 hours. Find their speed of walking.

Answer» 22.'A' takes 3 hours more than 'B' to walk a distance of 30km. But, if 'A' doubles his speed, he is ahead of 4 km by 3/2 hours. Find their speed of walking.


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