Twenty percent of pupils in one school are under the age of eight. The number of pupils over the age of eight is equal to the number of students under the age of eight, which is 48. How many students are there in total at the school?
A. 72
B. 80
C. 150
D. 100
Answer:D
Twenty percent of pupils in one school are under the age of eight. The number of pupils over the age of eight is equal to the number of students under the age of eight, which is 48. How many students are there in total at the school?
A. 72 B. 80 C. 150 D. 100
Explanation: Let x be the number of pupils. Then,Number of students over the age of eight years = (100 - 20)% of x = 80% of x.80/100 x = 80 x = 2/3= 48 x,x equals 100.