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Mathematics 19 Online
OpenStudy (anonymous):

a walks at uniform rate of 4km an hour 4 hours after his start b cycles after him at 10kmph how far wil b catch a after d starting poin

OpenStudy (phi):

after 4 hours, A is 16 km away B starts, and bikes for T hours. B goes 10*T km meanwhile, A continues walking and will be 16 + 4*T they meet when those distances are the same: 10T= 16+4T solve for T to find how long it takes B to catch A then use Distance = 10*T to find the distance from the starting point

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