一台复印机可以以每分钟 30 张双面纸的速度进行复印。计算

它不会直接告诉你答案，而是问你卡在哪一步看看 AI 是怎么陪你一步步弄懂这道题的

完整解法

1. Convert pages to double-sided papers and divide by the photocopying rate to find the time.

On double-sided setting,
$600\text{ pages}=\frac{600}{2}=300\text{ double-sided papers}.$
Time taken
$=\frac{300}{30}=10\text{ minutes}.$

答案

$10$ minutes

1. Convert 1 hour to minutes and use the photocopying rate to find the number of double-sided papers.

$1$ hour $= 60$ minutes

Number of double-sided papers photocopied
$= 30 \times 60 = 1800$

答案

$1800$ double-sided papers

AI 分析，可能出错

用 AI 批改，圈出写错的那一步，并自动将你的薄弱点存入错题本，形成你的错因库。