Arithmetichard · Past Paper
The ratio of the number of boys and girls in a college is 7:8. If the percentage increase in the number of boys and girls be 20% and 10% respectively, what will be the new ratio?
A21:22
B17:18
C8:9
D10:11
✓ Correct Answer: A — 21:22
New ratio = (7 * 1.20) : (8 * 1.10) = 8.4 : 8.8 = 84:88 = 21:22.
Share this question
More from Arithmetic
- Ratio of 2.5 to 1.5 is same as:
- The ratio of two numbers is 5:8. If their difference is 12, what are the numbers?
- By selling an article for Rs. 100, a man gains Rs. 15. Then his gain % is?
- If Rs. X amounts to Rs. Y in 2 years at CI, what is the rate?
- Out of 40 students, 30 are present. Find the percentage of students absent.