Answer:
We need to find 74% of 84 (that's the amount that was sold// If you would have been asked for the amount left, it would be (100%-74%), but here it's easier since it's already given to us)
Now, let's write the percentage as a fraction
74/100 of 84
**Trick, for percentages, anytime you see a "of" replace it with a multiplication symbol
74/100 x 84
Now, it's just a simple multiplication
(74x84)/100
*You can use a calculator and find your answer
It would give you 62.16 and you will need to round it to a whole number, so 62 gallons
*If you can't use a calculator, simplify the fraction as much as you can and try to approximate
Explanation:
~62