1791. In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is of the number of students of 8 years of age which is 48. What is the total number of students in the school?
- A. 100
- B. 70
- C. 150
- D. 200
Check answer and explanation
Answer: 100
Explanation 100 The number of students is x. So Number of students over 8 years old = (100-20)% of x = 80% of x ∴ 80% of x = 48 + 23 of48 ⇒ 80 100x = 80 ⇒ x = 100