A Boat Travels 12 Miles Downstream in 4 Hours and Returns

Multiple Choice

A boat travels 12 miles downstream in 4 hours and returns upstream in 6 hours. Find the speed of the current and the speed of the boat in still water.

A) Boat: $2.5 \mathrm{mph}$ ; current: $0.5 \mathrm{mph}$
B) Boat: $0.5 \mathrm{mph}$ ; current: $2.5 \mathrm{mph}$
C) Boat: $5.5 \mathrm{mph}$ ; current: $3 \mathrm{mph}$
D) Boat: $3 \mathrm{mph}$ ; current: $0.5 \mathrm{mph}$