“雪域情缘”同学在QQ群中提问：有道比例应用题帮我解下，谢谢 ！学校把修补图书的任务按5:3分给五年级和六年级，六年级实际修了216本，超过了原分配任务的20%，原计划五年级修复多少本？

数学题解答：先根据“六年级实际修了216本，超过了原分配任务的20%”算出六年级的原分配任务是多少本？
216÷（1+20%）＝180（本）

再根据“按5:3分给五年级和六年级”中的份数算出五年级的原分配任务是多少本？
180÷3×5＝300（本）答：原计划五年级修复300本。

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