Two water scooters at the same time from opposite sides of a river, travelling across the water on paths at 90 degree to

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Q 2276878776.     Two water scooters at the same time from opposite sides of a river, travelling across the water on paths at 90 degree to the sea shores. Though their speeds are different each scooters travels at a constant speed. They both cross each other at a point 720 m from the nearer shore. Both scooters remain at their sides for 10 min before starting to return. On the return trip they pass each other at 400 m from the other shore. Find the width of the river.
IBPS-PO 2017 Mock Mains
A

1716 m

B

1710 m

C

1670 m

D

1760 m

E

None of these

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