Brain Teasers
The Average Student
Kelly got a very poor grade on her first homework assignment at her new school. She got only one star out of five stars! She wanted to do better, and get an average of four stars. How many more five star homework assignments does she have to do to achieve this goal?
Answer
She needs three five star homework assignments. 3x5=15 plus the one star equals 16. Then, 16 divided by 4 homework assignments equals 4!Hide Answer Show Answer
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