River is 4.0mile.wide following at rate 2miles /hrs time taken by boat to cross river with speed of 4miles/hrs

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Arun · Answer

Dear student For minimum time the velocity in direction of motion shoud be maximum. And since speed of river is perpendicular hence have no influence on time taken to cross it. Now for maximum speed boat should move perpendicular to flow of river hence tme = distance ÷ speed = 4÷4=1hr RegardsArun (askIITians forum expert)

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River is 4.0mile.wide following at rate 2miles /hrs time taken by boat to cross river with speed of 4miles/hrs

River is 4.0mile.wide following at rate 2miles /hrs time taken by boat to cross river with speed of 4miles/hrs

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River is 4.0mile.wide following at rate 2miles /hrs time taken by boat to cross river with speed of 4miles/hrs

River is 4.0mile.wide following at rate 2miles /hrs time taken by boat to cross river with speed of 4miles/hrs

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