. 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 takento make the same trip will be(1) 2 hour(2) 3 hour(3) 2 hour 40 minute (4) 3 hour 40 minute

. A boat takes two hour to travel 4 km down and 4 km up the river wh

1.	. 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 takento make the same trip will be(1) 2 hour(2) 3 hour(3) 2 hour 40 minute (4) 3 hour 40 minute
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

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. 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 takento make the same trip will be(1) 2 hour(2) 3 hour(3) 2 hour 40 minute (4) 3 hour 40 minute​

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. 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 takento make the same trip will be(1) 2 hour(2) 3 hour(3) 2 hour 40 minute (4) 3 hour 40 minute