Ratio & Proportion · Question 14 · Hard
Two numbers are in the ratio 3 : 4. If 5 is subtracted from each, the ratio becomes 2 : 3. What is the sum of the numbers?
- 30
- 35
- 40
- 45
Answer and explanation
Answer: B. 35
Explanation: (3k − 5)/(4k − 5) = 2/3 gives 9k − 15 = 8k − 10, so k = 5. The numbers are 15 and 20, with sum 35.
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