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RRB NTPC CBT 2 Level 6 Exam 9 May 2022 Shift 2

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Question : 113

Total: 120

A man on a cliff observes a boat at an angle of depression of 30°, which is approaching the shore to a point exactly beneath the observer, at a uniform speed. Ten minutes later, the angle of depression of the boat is found to be 60°. Find the total time taken by the boat to reach the shore.

15 minutes
16 minutes
18 minutes
14 minutes

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