SBI Junior Associate 2023 · Question 22 of 188

A boat covers 15 km downstream and 12 km upstream in 1 hour 30 minutes. If the boat covers 105 km in still water in 5 hours, then find the time taken by the boat to cover 120 km downstream.

boats-and-streams

Answer: B. B. 4 hours

Still water speed = 105/5 = 21 km/hr. Let stream speed = x; 15/(21+x) + 12/(21-x) = 3/2; x = 9. Required time = 120/(21+9) = 4 hours.

Source: SBI Clerk Mains Memory Based Paper 2023 - Quant (Guidely, via bhagyaachievers.com) · memory-based

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SBI Junior Associate 2023 · Question 22 of 188

boats-and-streams

Still water speed = 105/5 = 21 km/hr. Let stream speed = x; 15/(21+x) + 12/(21-x) = 3/2; x = 9. Required time = 120/(21+9) = 4 hours.

Source: SBI Clerk Mains Memory Based Paper 2023 - Quant (Guidely, via bhagyaachievers.com) · memory-based

Practice the full SBI Junior Associate 2023 paper

Timed test with all 188 questions, just like the real exam.