Question
A boat's speed in still water is 12 km/hr, and the
currentās speed is 4 km/hr. If the boat takes a total of 18 hours to travel āxā km each in both directions, find āxā.Solution
ATQ, Downstream speed = 12+4=16 km/hr
Upstream speed = 12ā4=8 km/hr 
Taking LCM of 16 and 8, 
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