Civil Service Exam Reviewer · Ratio and Proportion · hard
Two numbers are in the ratio 3 : 4. If 6 is added to each, the ratio becomes 18 : 23. What is the larger of the original numbers?
- 46
- 30
- 40
- 52
Answer
C. 40
Solution
Let the numbers be 3k and 4k. (3k + 6)/(4k + 6) = 18/23 → k = 10. Larger = 4 × 10 = 40.
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