Question:
The sum of the number of boys and girls in a school is 300.If the number of boys is x, then the number of girls becomes x% of the total number of students. How many girls are there in the school?
A514
B250
C125
D225
Answer:
D. 225
Explanation:
If the number of boys is x, then the number of girls is (300-x). Then, (300-x) =x% of 300 300-x = x/100 * 300 300-x=3x 4x=300 x=75 Thus, number of girls=300-75=225