After filling the car's fuel tank, a driver drove from P to Q and then to R. He used 2/5 of the fuel driving from P to Q. if she used another 7 gallons to drive from Q to R and still had 1/4 of the tank full, what is the capacity of the tank in gallons?
A. 12
B. 18
C. 20
D. 21
সঠিক উত্তরঃ
C.
20
Explanation:
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