AMC8 2002

AMC8 2002 · Q10

AMC8 2002 · Q10. It mainly tests Averages (mean), Rounding & estimation.

The average price of his '70s stamps is closest to

他的70年代邮票的平均价格最接近

(A) 3.5¢ 3.5美分

(B) 4¢ 4美分

(D) 5¢ 5美分

(E) 5.5¢ 5.5美分

Answer

Correct choice: (E)

正确答案：（E）

Solution

The '70s stamps cost: Brazil, $12(\$$0.06) = \$0.72$; Peru, $6(\$$0.04) = \$0.24$; France, $12(\$$0.06) = \$0.72$; Spain, $13(\$$0.05) = \$0.65$. The total is $2.33$ for the 43 stamps and the average price is $\frac{\$$2.33}{43} \approx \$0.054 \approx 5.5¢$.

70年代邮票花费：巴西，$12(\$$0.06) = \$0.72$；秘鲁，$6(\$$0.04) = \$0.24$；法国，$12(\$$0.06) = \$0.72$；西班牙，$13(\$$0.05) = \$0.65$。43张邮票总计 $2.33$，平均价格 $\frac{\$$2.33}{43} \approx \$0.054 \approx 5.5¢$。

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