AMC8 2006
AMC8 2006 · Q14
AMC8 2006 · Q14. It mainly tests Fractions.
If Bob and Chandra both read the whole book, Bob will spend how many more seconds reading than Chandra?
如果 Bob 和 Chandra 都读完整本书，Bob 比 Chandra 多花多少秒阅读？
(A)
7,600
7600
(B)
11,400
11400
(C)
12,500
12500
(D)
15,200
15200
(E)
22,800
22800
Answer
Correct choice: (B)
正确答案：（B）
Solution
(B) Bob takes $45-30=15$ more seconds per page than Chandra. So the difference in their total reading times is $760\cdot 15=11{,}400$ seconds. Bob will spend $11{,}400$ more seconds reading than Chandra.
（B）Bob 每页比 Chandra 多用 $45-30=15$ 秒。因此他们总阅读时间的差为 $760\cdot 15=11{,}400$ 秒。Bob 的阅读时间将比 Chandra 多 $11{,}400$ 秒。
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