Question

A boy can row 20kmph in still water and the river is running at 8km per hrs . if the boy takes 4 hrs to row the place and back , how far is the place?
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Answer 1

Answer:

48km

Step-by-step explanation:

let the speed of the boy be x

and

let the speed of river be x

GIVEN

Speed of the boy can row =20x

speed of river=8x

time taken= 4x

total distance covered=?

total distance covered=speed of boy × time taken - speed of river× time taken

total distance covered=20x × 4x - 8x × 4x

=80x - 32x = 48x

Therefore ,the total distance covered= 48 km