小亮去商店买文具,所需的钱如果全部买笔记本刚好可以买10本,如果全部买铅笔刚好可以买15枝,现在他先买了4本笔记本,剩下的钱还能买多少枝铅笔?
人气:400 ℃ 时间:2019-10-17 08:10:48
解答
(1-
×4)
÷,
=(1-
)
÷,
=
÷,
=9(枝),
答:剩下的钱还能买9枝铅笔.
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