Two boats starts at the same instant to cross a river W metre wide. The faster boat reaches the other bank and returns back immediately. What are the distances travelled by them when they meet, where the speeds of these boats are `b_1&b_2`?

Options

A. `(2W)/((b_(1)+b_(2))),(2W)/((b_(1)-b_(2)))`
B. `(2W)/((b_(1)+b_(2)))b_(1)and(2W)/((b_(1)+b_(2)))b_(2)`
C. `(W)/((b_(1)+b_(2)))b_(1),(W)/((b_(1)+b_(2)))b_(2)`
D. data insufficient

Answer

B