A man can row 10 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and back. What is the total distance traveled by the man?  Choose the correct choice from the following:
A) 6.24 km
B) 6 km
C) 9.86 km
D) 5.66 km
E) 10 km

Rationale: m = 10 s = 1.2 ds = 11.2 us = 8.8 x / 11.2 + x / 8.8 = 1 x = 4.93 d = 4.93 * 2 = 9.86 answer : c
Answer: C