ibps-so 2025 · Question 114 of 271

The upstream speed of a boat is 15 km/hr and the ratio of time taken by the boat to cover 105 km upstream and 108 km downstream 7 : 6 respectively. Find the speed of stream (in km/hr)?

A3Correct
B5
C4
D7
E1

Answer: A. 3

Explanation

Time taken by boat to cover 105 km upstream = = 7 hours So, time taken by boat to cover 108 km downstream = 7 × 7 = 6 hours So, downstream speed of boat = 6 = 18 km/hr Speed of stream = 18 – 15 = 3 km/hr

Source: IBPS SO Prelims Memory Based 2025 (held 30 Aug 2025, Shift 1) - BankersAdda · memory-based

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