Two boats A and B, move away from a buoy anchored at the middle of a river along the mutually perpendicular straight lines: the boat A along the river and the boat B across the river. Having moved off an equal distance from the buoy the boat returned. What is the ratio of times of motion of boats \[\frac{{{\tau }_{A}}}{{{\tau }_{B}}},\] if the velocity of each boat with respect to water is 1.2 times greater than the stream velocity?

Two boats A and B, move away from a buoy anchored at the middle of a r

1.	Two boats A and B, move away from a buoy anchored at the middle of a river along the mutually perpendicular straight lines: the boat A along the river and the boat B across the river. Having moved off an equal distance from the buoy the boat returned. What is the ratio of times of motion of boats \[\frac{{{\tau }_{A}}}{{{\tau }_{B}}},\] if the velocity of each boat with respect to water is 1.2 times greater than the stream velocity?
A.	2.3
B.	1.8
C.	0.5
D.	0.2
Answer» C. 0.5