Question
Mr Oliver had 60 volleyballs. He gave 15 of his volleyballs to Tim. During the practice, Mr Oliver lost 4 volleyballs. How many volleyballs did Mr Oliver have in the end?
4 m

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Mr Oliver had 60 volleyballs. He gave 15 of his volleyballs to Tim. During the practice, Mr Oliver lost 4 volleyballs. How many volleyballs did Mr Oliver have in the end?