Mike changes tires on different vehicles.  He changes all the tires on 12 motorcycles and all the tires on 10 cars.  How many tires did he change?
He changed 12*2=<T>multiply(12, 2)=24 motorcycle tires
He changed 10*4=<T>multiply(10, 4)=40 car tires
So he changed 24+40=<T>add(24, 40)=64 total tires
