Answer:
7.5 mph
Step-by-step explanation:
First, you are supposed to divide 2.5 by 20. The answer you will get will be 0.125.
2.5/ 20 = 0.125
Then you are to multiply 0.125 by 60. The answer will be 7.5
0.125 * 60 = 7.5
Thus, the boat's speed is 7.5 mph
