A BOAT CAN TRAVEL 9.6 KM DOWNSTREAM IN 32 MINUTES. IF THE SPEED OF THE CURRENT IS ONE-FIFTH OF THE SPEED OF THE BOAT IN STILL WATER, THEN FIND THE SPEED UPSTREAM.
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Answer:
12 kmph
Step-by-step explanation:
Boat's downstream speed = (9.6×60)/32 = 18 kmph.
Ratio is 5:1.
Ratio of the speed of boat downstream to the ratio of the speed of boat upstream = (5+1):(5-1) = 6:4 = 3:2.
Downstream speed = 3x kmph = 18 kmph.
So, x = 6.
Similarly, upstream speed = 2x kmph = (2×6) kmph = 12 kmph...
✍️Ajit Kumar Sahoo
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