The speed of a motor boat itself is 20 km/h and the speed of the current is 4 km/h. The boat went 120 km downstream. What distance will the boat cover in the same time going upstream?
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Time of going down stream is given by (120)/(20+4) =5 h
Then distance in upstream is given by 5×(20-4)=80 km
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Given :
Speed of motor boat , v = 20 km/h .
Speed of the current , u = 4 km/h .
Distance travelled by boat downstream , d = 120 km .
To Find :
Distance covered by boat in the same time going upstream .
Solution :
Time taken to go 120 km downstream .
So , distance covered by boat in the same time going upstream is :
Therefore , Distance covered by boat in the same time going upstream is 80 km .
Learn More :
Relative Velocity
https://brainly.in/question/13263494
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