Question

Speed of boat in still water is 12 km/h and speed of stream is 2km/hr. A distance of 8km,going upstream,is covered in

Answer 1

Step-by-step explanation:

given speed of boat in still water is 12km/hr

we know upstream means flowing against the current of water

it means... if we take speed in still water as 'x' and current as 'y'

speed of stream is 2km/hr (i.e 12- y =2

so y = 10km/hr)

so speed of current is 10 km/ hr

then speed when going upstream is x-y

so here given d= 8km/hr

here x is 12km/hr and y is 10km/hr

s= d/t

t=d/s

t=8/x-y

t=8/12-10

t= 8/2

t= 4 hrs

I think the question is incomplete

and by reading the question i actually guessed that it is to find the time

if there is any mistake pls let me know :)

hope it helps you!