Question

a boat covers 14km upstream and 20km downstream in7 h
ours. also it covers 22km upstream and 34km downstream in 10 hours. find the speed of the boat In still water and of that stream.

Answer 1

The boat covers 14Km ups.
and 20km ds. at time 7hrs.
also cover 22km ups.
and 34km ds. in 10hrs
total speed = total distance/total time
:.total distance = 14+20+22+34=90km
and total time=7+10=17hrs
:. put the values
speed=90/17
i.e. 5.294km/h or 5.3 km/h
plz check wether ans is wright or wrong