If a motorboat whose speed in still water is 18km/h takes 1 hour more to go 24 km upstream than to return downstream to the same spot then find the speed of the motorboat
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... 18 km/h in still water takes 1 hour more to go 24 km upstream than to return downstream to the same spot.
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Let the speed of the stream be x km/hr.
Hu
Speed of the boat upstream = Speed of boat in still water – Speed of the stream
∴ Speed of the boat upstream = ( 18 – x ) km/hr
Speed of the boat downstream = Speed of boat in still water + Speed of the stream
∴ Speed of the boat downstream = ( 18 + x ) km/hr
Time of upstream journey = Time for downstream journey + 1 hr.
Hu
Speed of the boat upstream = Speed of boat in still water – Speed of the stream
∴ Speed of the boat upstream = ( 18 – x ) km/hr
Speed of the boat downstream = Speed of boat in still water + Speed of the stream
∴ Speed of the boat downstream = ( 18 + x ) km/hr
Time of upstream journey = Time for downstream journey + 1 hr.
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