Question
Riordan bought 7 packets of mochi balls. There were 7 mochi balls in each packet. He gave 15 mochi balls to Howard, some to Oliver, and had 27 of the mochi balls left. How many mochi balls did he give to Oliver?
4 m

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Riordan bought 7 packets of mochi balls. There were 7 mochi balls in each packet. He gave 15 mochi balls to Howard, some to Oliver, and had 27 of the mochi balls left. How many mochi balls did he give to Oliver?