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GWD 1-12

Q12. When n liters of fuel was added to a tank that was already 1/3
full, the tank was filled to 7/9 of its capacity. In terms of n, what
is the capacity of the tank, in liters?


a. 10/9 n

b. 4/3 n

c. 3/2 n

d. 9/4 n

e. 7/3 n

那位好心帮忙开导, 开导我。谢了。
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设the capacity of the tanker is x liters.

1/3 x + n = 7/9 x

x=9/4 n

选D。

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