Alex is always getting himself into trouble. One week his teacher gives him detention every day after school. As a punishment he is asked to carry 100 heavy sandbags across the athletics track to the long jump pit. After struggling with the first ten sandbags, Alex has an idea. He realises that if he puts something into each sandbag it will be lighter to carry. What is it?
Send your solutions to Mr Riley via Schoology message, or email (email@example.com).