A Cabin Cruiser Travels 20 Miles in the Same Time $5 \mathrm{mph}$

Multiple Choice

A cabin cruiser travels 20 miles in the same time that a power boat travels 40 miles. The cruiser travels $5 \mathrm{mph}$ slower than the power boat. Find the speed of each boat.

A) Power boat: $15 \mathrm{mph}$ ; cabin cruiser: $10 \mathrm{mph}$
B) Power boat: $20 \mathrm{mph}$ ; cabin cruiser: $15 \mathrm{mph}$
C) Power boat: $10 \mathrm{mph}$ ; cabin cruiser: $5 \mathrm{mph}$
D) Cannot be determined without more information