Question

a boat goes 30km up stream and 44km down stream in 20 hours in 13 hours it can go 40 km up stream and 55 km down stream determine the speed of the stream and that of the boat in still water

Answer 1

Answer:

boat goes up = 30km = +30

goes down = 44km= -44

= -14 km

and again goes up = 40km = +40

goes down= 55km = - 55

= -15

= -14 -15

= - 29

boat is still 29 km in water