Consider the question. Bess and Holly are playing Frisbee at the park. Bess can throw the Frisbee as far as 20 meters and she does this 4 times. Holly can only throw the Frisbee as far as 8 meters and she does this 5 times. Each time Bess throws a Frisbee, she throws it back to her original position. Holly leaves her Frisbee where it lands every time she throws it. In total, how many meters have the thrown Frisbees traveled?
 If the answer is '200'; explain the reasoning:
Bess throws the Frisbee out 4 times * 20 meters each time = 80 meters. She then throws it back which doubles the distance traveled to 80 meters * 2 = 160 meters. Holly throws the Frisbee out 5 times * 8 meters = 40 meters. So in total, Holly and Bess have thrown the Frisbees 160 + 40 = 200 meters.