数学题:王老师用一些钱给学生买奖品
- 时间:2020-05-12 13:42:36
- 分类:数学世界
- 阅读:129 次
数学题:王老师用一些钱给学生买奖品,单买钢笔可买8支,单买练习本可买16本,王老师买了5支钢笔,剩下的钱可买多少本练习本?
数学题解答:这题是一道变相的工程问题,可以把王老师的钱看作“1”,那么每支钢笔的钱就是这些钱的1/8,每本本子就是这些钱的1/16。
王老师先买了5支钢笔,那么就用了:1/8 ×5 = 5/8,还剩下1 – 5/8 =3/8。
可以买的练习本有:3/8 ÷ 1/16 = 6(本)
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