Question

. A boat takes two hour to travel 4 km down and
4 km up the river when water is not flowing.
If river starts flowing with 2 kmph then time taken
to make the same trip will be
(1) 2 hour
(2) 3 hour
(3) 2 hour 40 minute (4) 3 hour 40 minute​

Answer 1

Answer:

2 hour because if the river

is no flowing in take 2hour to cover 4 kilometre so if the river is flowing it will take half equal to 2 hours 2 kilometre per