Abhi rows upstream a distance of 28 km in 4 hrs and rows downstream a distance of 50 km in 2hrs. To row a distance of 44.8 km in still water, he will take how much time ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 2.8 hrs.
Upstream speed (Su) = 7 km/hr
Downstream speed (Sd) = 25 km/hr
Speed of the boat = (Su + Sd) / 2
= (7 + 25) / 2
= 16 km/hr
Time = 44.8/16 = 2.8 hrs