Question
Zoe and Isabella shared 480 beads. After Zoe gave Isabella 21 beads, Zoe had 3 times as many beads as Isabella. How many beads did Isabella have at first?
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Zoe and Isabella shared 480 beads. After Zoe gave Isabella 21 beads, Zoe had 3 times as many beads as Isabella. How many beads did Isabella have at first?