Math
posted by Xian .
A bicycle has a 100 cm diameter wheel. If you ride on and around a circle with a 10 km diameter 12 times, how many revolutions does the wheel make?

find the circumference of the wheel.
Find the circumference of the circuit, multiply it by 12 , then divide by the circumference of the wheel
change everything to metres. Since you are in the metric system, this is very easy to do.