Find two number whose sum is 28 and the difference is 4 _____________?
Correct answer: A. 12,16
- A. 12,16
- B. 18,10
- C. 15,13
- D. 14,12
Explanation
Let the larger number be x and the smaller be y. From x + y = 28 and x - y = 4, adding the equations gives 2x = 32, so x = 16 and y = 12. The likely wrong choice is 15, 13, because those numbers have sum 28 but their difference is only 2.
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