Study the following table and answer questions:
Number of students studying in five schools of a city
| Schools | No of Students | Ratio of boys and girls Boys : Girls |
| A | 680 | 9:08 |
| B | 720 | 4:05 |
| C | 540 | 5:13 |
| D | 660 | 2:01 |
| E | 900 | 13:12 |
The total number of girls in schools B and C is what percent less than the total number of boys in schools A and D?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 1.25.
Given -
Number of schools = 5
Total number of boys in A = 680 × (9/17) = 360
Total number of boy in D = 660 × (2/3) = 440
Total number of boys in A and D = 360 + 440 = 800
Total number of girls in B = 720 × (5/9) = 400
Total number of girls in C = 540 × (13/18) = 390
Total number of girls in B and C = 400 + 390 = 790
Required percentage = [(Total number of boys in A and D - Total number of girls in B and C) × 100]/Total number of boys in A and D = [(800 - 790) × 100]/800 = 1.25%