Question

Melanie and Joseph are raising money for their class trip to the zoo. They each need $30 to pay for the trip and are selling boxes of cookies for $4 each to earn the money. Joseph has sold 5 boxes and Melanie has sold 3 boxes. How much more money does Melanie need than Joseph?

Answer 1

Melanie has sold 3 boxes for $4 each. So Melanie earned $12 (3 boxes x $4). Now she needs $18. Joseph has sold 5 boxes, also for $4 each, what means $20, and now he needs $10. If she needs 18 and him 10, then she needs 8 more than him (18 - 10).