Percentage - Excercise 1 - Q11

Question

i. The sum of the number of boys and girls in a school is 150. if the number of boys is x, then the number of girls becomes x% of the total number of students. The number of boys is :

  • 60
  • 70
  • 80
  • 90
4
Answer and Explanation
The Correct answer is : 60
Explanation :
We have : ${(x+\frac{x}{100}\times150)}$= 150
 ${\frac{5x}{2}}$= 150
x =${ \frac{150\times2}{5}}$ = 60.
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