ibps-csa 2014 · Question 125 of 196
Boats & Streams
Let the speed of boat rowed by man by x. A man can row 10.2 km downstream in 18 minutes i.e speed (x+3.5) = (10.2*60)/18 Hence, speed of boat = 30.5 km/hr Now, relative speed of boat going downwards = 30.5-3.5 = 27km/hr 1 Now, number of hours required to row upwards = 121.5/27 = 4.5 hours = 4 2 Option A is correct.
Source: IBPS Clerk CWE paper held 14-12-2014 — solved-paper book excerpt (CollegeDunia) with publisher answer key; sections cross-verified against BankingAdda / FreshersNow / CollegeDekho 14-12-2014 papers · memory-based
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