Study the following bar graph and answer the question given below.
What is the difference between the number of girls in school A and the number of girls in school C?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 25
Total number of boys and girls in school A = 1800
a + b = 1800 ( where a = number of boys and b = number of girls).......(1)
The difference in the number of boys and girls in school A = 350
a - b = 350............(2)
from 1 and 2 we get,
2b = 1450
b = 725.
Total number of boys and girls in school C = 2000
c + d = 2000 ( where c = number of boys and d = number of girls)......(3)
The difference in the number of boys and girls in school C = 500
c - d = 500..........(4)
from 3 and 4 we get,
d = 750
Required difference = 750 - 725 = 25.