SSC GD Constable 2015 · Question 40 of 88
time-speed-distance
750 10 Boat's upstream speed(Su) = 675 = 9 m/sec 750 5 Boat's downstream speed(Sd) = 450 = 3 m/sec 1 Boat's speed in still water = 2 × (Su + (Sd) 1 10 1 25 5 = 2 × ( 9 + 3) = 2 ×( 9 ) 25 = 18 m/sec Converting it into km/hr 25 18 = 18 × 5 = 5 km/hr
Source: Solved SSC GD 2015 Paper with Solutions — Collegedunia · reliable-secondary
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