AMC8 2014
AMC8 2014 · Q5
AMC8 2014 · Q5. It mainly tests Rates (speed).
Margie's car can go $32$ miles on a gallon of gas, and gas currently costs $\$4$ per gallon. How many miles can Margie drive on $\$20$ worth of gas?
玛吉的车每加仑汽油可以行驶 $32$ 英里,而汽油目前每加仑价格为 $\$4$。玛吉用 $\$20$ 的汽油能行驶多少英里?
(A)
64
64
(B)
128
128
(C)
160
160
(D)
320
320
(E)
640
640
Answer
Correct choice: (C)
正确答案:(C)
Solution
Margie can afford $20/4=5$ gallons of gas. She can go $32\cdot5=\boxed{\textbf{(C)}~160}$ miles on this amount of gas.
玛吉可以买到 $20/4=5$ 加仑汽油。她用这些汽油可以行驶 $32\cdot5=\boxed{\textbf{(C)}~160}$ 英里。
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