Question

A boat goes 16 upstream in 4 hours and a distance of 20 km downstream in 2 hours the speed of the boat in standing water

Answer 1

let boat speed be x km/hr and stream be y km/hr

now , (x+y)*2=20

(x-y)*4=16

solving we get x=7km/hr

Answer 2

Answer:

,,, , rate of upstream = (16/4)kmph

= 4kmph

...... rate of downstream=( 20/2)kmph

=10kmph

speed in still water= 1/2 (10+4)

1. .

=14/2

= 7kmph

........ hope it's helpful