Civil Service Exam Reviewer · Ratio and Proportion · hard
Two numbers are in the ratio 3 : 4. If 18 is added to each, the ratio becomes 24 : 29. What is the larger of the original numbers?
- 58
- 30
- 40
- 76
Answer
C. 40
Solution
Let the numbers be 3k and 4k. (3k + 18)/(4k + 18) = 24/29 → k = 10. Larger = 4 × 10 = 40.
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