: In preparation for an upcoming swim meet, Jack has decided to swim back and forth across Lake Logarithm, which is 600m wide. In still water, he can swim at v m/min, but there is a current moving at 5m/min, so he takes 2 minutes longer to swim across the lake (into the current) than to swim back (with the current).

a. Use the equation t=d/V, to determine a simplified expression for the difference in his time for each portion of the trip.

b. Use your equation from part a. to determine how fast Jack can swim in still water.

c. How long does it take him to complete each portion of the trip?