Question
A boat can cover 150 km in downstream in 5 hours and 121
km in upstream in 11 hours. Find the speed of boat in still water.Solution
Downstream speed of the boat = 150/5 = 30 km/hr Upstream speed of the boat = 121/11 = 11 km/hr Speed of boat in still water = (11 + 30)/2 = 20.5 km/hr
............................... is a curve which shows various combinations of inputs that cost the same total amount .Â
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