There are k gallons of gasoline available to fill a tank. After d gallons have been pumped, in terms of k and d, what percent of the gasoline has been pumped?
A.
B.
C.
D.
Answer:A
There are k gallons of gasoline available to fill a tank. After d gallons have been pumped, in terms of k and d, what percent of the gasoline has been pumped?
A. B. C. D.
Explanation: A Variables in the answer choices? Plug in! This is a percent question, so make k = 100 and d = 40. If 40 out of the 100 gallons have been pumped, that equals 40%. So 40% is your target answer. When you plug k = 100 and d = 40 into the answers, only (A) gives you 40. Plugging In turns a hard question into a much easier question.