Quantitative Aptitude • Ratio, Average & MixtureMedium
The ages of A and B are in the ratio 3 : 4. After 5 years, the ratio of their ages will be 26 : 33. What is A's present age?
A. 21 years✓ Correct Answer
B. 26 years
C. 28 years
D. 7 years
💡 Solution & Explanation
Let the present ages be 3x and 4x. After 5 years: (3x + 5) : (4x + 5) = 26 : 33. Cross-multiplying: 33(3x + 5) = 26(4x + 5), which gives 5x = 35, so x = 7. A's present age is 3 × 7 = 21 years (and B's is 28). Check: after 5 years they are 26 and 33, which is 26 : 33.
More Quantitative Aptitude Ratio, Average & Mixture questions
- The average weight of 6 students increases by 2 kg when one student weighing 44 kg is replaced by a new…
- In what ratio must rice costing ₹53 per kg be mixed with rice costing ₹65 per kg, so that the mixture is…
- What is the average of the first 13 odd numbers?
- The average of 9 results is 59. The average of the first 5 results is 64 and the average of the last 5…
- An amount of ₹22,400 is shared among P, Q and R in the ratio 3 : 5 : 6. How much does R get?