Question

By hiring boat X, Rohan took 12 hours to travel a round trip between two points that are 40 km apart in a river. By hiring boat Y, whose speed in still water is twice that of boat X, in still water, he took 15/4 hours for the round trip, then speed of boat X in km/hr is:
(1) 9
(2) 12
(3) 15
(4) None of these​

Answer 1

Step-by-step explanation:

answer of this question is number 2 because free 12 x 15 upon 4 then divided by 14 kilometres is a tax there is a 212 transit is coming 12 kilometre hours