PSAT Math Grid-Ins Question 147: Answer and Explanation
Question: 147
Marcus completely filled his truck's 14-gallon gas tank. The computer at the gas pump indicates that Marcus spent $34 in this transaction; the price per gallon was $3. How many gallons of gas did Marcus have in his tank before he started to fill it?
Correct Answer: 2.66 or 2.67
Explanation:
2.66 or 2.67 Marcus purchased $34 of gas at $3 a gallon. You can determine how many gallons of gas he purchased:
Then subtract 11.333 from the total capacity of the tank:
14 - 11.333 ≈ 2.67
You can answer 2.66 or 2.67—the PSAT will be fine if you round up or round down. Just be sure to fill out all the spots in the grid.
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