Solve
-The Approach Ramp Used by a Daredevil Motorcyclist for Flying

Multiple Choice

Solve.
-The approach ramp used by a daredevil motorcyclist for flying over a collection of flaming barrels of oil has a rise of 13 feet for every 20 feet in horizontal distance. Find the grade of the ramp. Round to the nearest whole percent.

A) $15 \%$
B) $65 \%$
C) $70 \%$
D) $0.65 \%$