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
Please help~ Thank u...