该图表显示了 Bobby 奶茶店未售出的奶茶杯数。

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. Read the number of cups unsold at 11 00 and 12 00 from the graph

At 11 00, unsold cups = $1000$ .
At 12 00, unsold cups = $750$ .

2. Calculate the number of cups sold between 11 00 and 12 00

Cups sold = $1000 - 750 = 250$

答案

$250$

1. Find the number of cups sold between 12 00 and 15 00

Cups unsold at 12 00 = $750$
Cups unsold at 15 00 = $130$
Number of cups sold = $750 - 130 = 620$

2. Calculate the total amount of money received

Total money received = $620 \times 3.90 = \char36{}2418$

3. Calculate the average amount of money received per hour

Time duration from 12 00 to 15 00 = $3$ hours
Average money per hour = $2418 \div 3 = \char36{}806$

答案

$806

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。