PSAT Math Multiple-Choice Question 281: Answer and Explanation
Question: 281
The sum of two numbers is 80. One number is 6 less than the other. What’s the smaller number?
- A. 43
- B. 34
- C. 37
- D. 38
Correct Answer: C
Explanation:
By representing the unknown number with a variable, an equation can be made to solve for it. The equation has been written so that N is the value of the smaller number.
N + (N + 6) = 80
2N + 6 = 80
2N = 74
N = 37
See Lesson: Equations with One Variable.
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