A Petrol tank now is 12 full. After you remove 8 gallons petrol from the 12 full tank, the tank is then 110 full. what is the capacity in gallons of the tank?

Correct Answer: 20
let,capacity = x gallon. According to ques, (1/2)x - 8 = (1/10)x or, 5x - 80 = x or, x = 20 Ans: 20 gallon