AMC8 1994
AMC8 1994 · Q2
AMC8 1994 · Q2. It mainly tests Fractions, Averages (mean).
$\frac{1}{10} + \frac{2}{10} + \frac{3}{10} + \frac{4}{10} + \frac{5}{10} + \frac{6}{10} + \frac{7}{10} + \frac{8}{10} + \frac{9}{10} + \frac{55}{10} =$
$\frac{1}{10} + \frac{2}{10} + \frac{3}{10} + \frac{4}{10} + \frac{5}{10} + \frac{6}{10} + \frac{7}{10} + \frac{8}{10} + \frac{9}{10} + \frac{55}{10} =$
(A)
$\frac{1}{4}$
$\frac{1}{4}$
(B)
6.4
6.4
(C)
9
9
(D)
10
10
(E)
11
11
Answer
Correct choice: (D)
正确答案：（D）
Solution
The sum of all the numerators is 100. Consequently, the sum of all the fractions is $100/10 = 10$.
所有分子之和为 100。因此，所有分数的和为 $100/10 = 10$。
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