Ratio and Proportion – Multiple Choice Questions (MCQs)

1. 49. The ratio of the prices of two articles is 3:4. If the price of the first article is increased by 10% and that of the second by 20%, what will be the ratio of the new prices?

   • A. 33:48:00
   • B. 15:16
   • C. 3:8
   • D. 11:16

2. 50. If the ratio of A to B is 4:5 and the ratio of B to C is 3:7, then find the ratio of A:B:C.

   • A. 12:15:35
   • B. 4:05:07
   • C. 12:20:21
   • D. 28:35:15

3. 51. The average age of three boys is 15 years and their ages are in the ratio 3:5:7. What is the age of the youngest boy?

   • A. 9 years
   • B. 15 years
   • C. 21 years
   • D. 27 years