Solve the Problem $38 \mathrm { mph }$ Relative to the Water and That the Current Is Flowing

Multiple Choice

Solve the problem.
-Suppose you would like to cross a 216 -foot wide river in a boat. Assume that the boat can travel $38 \mathrm { mph }$ relative to the water and that the current is flowing west at the rate of $6 \mathrm { mph }$ . If the bearing is chosen so that the boat will land at a point exactly across from its starting point, how long will it take for the boat to make the crossing? Give your answer to the nearest second.

A) $16 \mathrm { sec }$
B) $4 \mathrm { sec }$
C) $2 \mathrm { sec }$
D) $8 \mathrm { sec }$