57 ÷ (1 + 25% - 3/8 - 2/5)
= 57 ÷ (5/4 - 3/8 - 2/5)
= 57 ÷ (7/8 - 2/5)
= 57 ÷ 19/40
= 120台
答:九月份计划生产机床120台.
某机床厂九月份上旬完成了计划的3/8,中旬完成了计划的2/5,下旬完成了57台机床,结果超过计划的25%.这个
某机床厂九月份上旬完成了计划的3/8,中旬完成了计划的2/5,下旬完成了57台机床,结果超过计划的25%.这个
厂九月份计划生产机床多少台?
厂九月份计划生产机床多少台?
数学人气:932 ℃时间:2020-02-01 07:58:19
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