Question

A sailor goes 8km. dowmstream in 40 min and return in 1 hour . determine the.speed of sailor.in still water and the speed of the current.

Answer 1

Answer:

Explanation:

Let speed in still water be x and speed of current be y.

Speed downstream=Speed in still water+Speed of current

Speed upstream=Speed in still water-Speed of current

Speed downstream=8/(40/60)=12km/h

Speed upstream=8km/h

So,

x+y=12

x-y=8

Hence,

x=10,

y=2

Speed of sailor in still water=10km/h and that of current=2km/h

Hope you understood

Answer 2

Answer:

hey watch the above pic for ur answer

although it's copied answer

sorry for it