Question
Min and Betty had an equal number of beads at first. Min used 13 of her beads and Betty used 18 of her beads. They used 99 beads altogether. How many beads did Betty have in the end?
4 m

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Min and Betty had an equal number of beads at first. Min used 13 of her beads and Betty used 18 of her beads. They used 99 beads altogether. How many beads did Betty have in the end?