# A boat goes 12 km upstream and 40km in downstream in 8 hours.if can go 16 km upstream and 32 km downstream in same time. find the speed of boat in still water and speed of the stream?rs.

1
by TaralKaul474

Log in to add a comment

by TaralKaul474

Log in to add a comment

Take speed of boat in still water =xkm/hr nd in stream water =ykm/h fir upstream speed will be x-y nd for downstream it will be x+y km/hr. As time =dist/speed for 1st case
12/x-y +40/x+y =8 now let x-y =p x+y=q
12p+40q=8 ~ly for 2nd case it will be
16/x-y+32/x+y=8 =>16p+32q=8 wth any metho