ISEE Mathematics Achievement Question 232: Answer and Explanation
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Question: 232
5. Adrinda is 8 years older than Marsha. Daryl is 3 years older than Marsha. Which equation correctly relates Adrinda’s age (a) and Daryl’s age (d)?
- A. d = a − 5
- B. d = a + 5
- C. d = a − 3
- D. d = a + 3
Correct Answer: A
Explanation:
A is correct. If Adrinda is 8 years older than Marsha and Daryl is 3 years older than Marsha, then Daryl must be 5 years younger than Adrinda. So d = a − 5.