Question
Oliver and Xavier shared some erasers. Oliver took 511 of the erasers. After Oliver lost 18 erasers, Xavier had thrice as many erasers as Oliver. How many erasers did Xavier have in the end?
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Oliver and Xavier shared some erasers. Oliver took 511 of the erasers. After Oliver lost 18 erasers, Xavier had thrice as many erasers as Oliver. How many erasers did Xavier have in the end?