PLS HELP ASAP!!!!!!

A boy swims downstream 0.9 miles in the same amount of time that he can swim 0.6 miles upstream. if the rate of the current is 1.5 mph, how fast can he swim in still water.
A. 0.2 mph,
B. 0.75 mph, or
C. 7.5 mph

Respuesta :

Your answer would be 7.5. Hope this helps!
The answer is c. 7.5mph