Question

A man can row upstream at 8 km per hour and downstream its 13 km per han than the speed of the stream is

Answer 1

Answer:

Let the speed of the man be A and the speed of the stream be B.

The nett speed of the man upstream is:

A - B = 8mph Equation(1)

The nett speed of the man downstream is:

A + B = 13kmph Equation(2)

We need to find the speed of the stream or B kmph.

From Equation(1)

A = 8 + B Equation(3)

Substitute A from Equation(3) into Equation(2):

( 8 + B ) + B = 13 so

2B = 13 - 8 = 5

Therefore the speed of the stream = B = (5/2)

So Speed of stream = 2.5kmph

PB

Answer 2

5/2 = 2.5
Hope it helps you