ISEE Mathematics Achievement Question 159: Answer and Explanation
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Question: 159
10. Donna is d years old. Frank is f years old. Frank is 4 years younger than Donna. Which equation represents the relationship between Donna’s and Frank’s age?
- A.
- B. d = 4 − f
- C. f = d − 4
- D. f = 4 − d
Correct Answer: C
Explanation:
C is correct. If Frank is 4 years younger than Donna, then the relationship between their two ages can be expressed by the equation f = d – 4.