a boat can travel with a speed of 16 km/hr in still water. if the rate of the stream is 5 km/hr, then find the time taken by the boat to cover the distance of 84 km downstream.
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Downstream ⇒ The Boat travels in the direction of the stream.
⇒ If the boat travels in direction of the stream, as the velocity of the stream is 5 km/hr, the stream pushes the boat with a speed of 5 km/hr, but the speed of boat in still water is 16 km/hr. so, the combined speed of the boat is (5 + 16) = 21 km/hr
⇒ the boat travels 21 km in one hour
⇒ the boat travels (21 × 4) km in (4 × 1) hours
⇒ the boat travels 84 km in 4 hours.
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Heya Mate!!!
Speed Downstream = ( 16 +5 ) = 21 kmph
Time = Distance/Speed = 84/21 = 4hours
Speed Downstream = ( 16 +5 ) = 21 kmph
Time = Distance/Speed = 84/21 = 4hours
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