塞雷娜的月薪是 $8650$ 。她把钱的 $\frac{1}{5}$ 花在了食物上。下面的饼图显示了她是如何使用月薪的。

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. Calculate the amount spent on food by multiplying the fraction by the total salary

$\frac{1}{5} \times 8650 = 1730$

答案

$1730

1. Calculate the total amount spent on rent and transport

$\text{Total spent on rent and transport} = \char36{}2422 + \char36{}865 = \char36{}3287$

2. Express the amount as a fraction of the total salary and simplify

$\text{Fraction} = \frac{3287}{8650} = \frac{19}{50}$

答案

$\frac{19}{50}$

1. Calculate the amount spent on food.

$\text{Food} = \frac{1}{5} \times 8650 = \char36{}1730$

2. Calculate the amount spent on shopping.

$\text{Shopping} = 8650 - (1730 + 865 + 2422 + 3000) = 8650 - 8017 = \char36{}633$

3. Calculate the percentage spent on shopping and round to the nearest 1%.

$\text{Percentage} = \frac{633}{8650} \times 100\% \approx 7.3179\% \approx 7\%$

答案

$7\%$

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