In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is 2/3 of the number of students of 8 years of age which is 72. What is the total number of students in the school?	Choose one: A) 72 B) 80 C) 120 D) 40 E) 150
Explanation: Let the number of students be x.   Then, Number of students above 8 years of age = (100 - 20)= 
<gadget id="calculator">(100 - 20)</gadget>
<output>80</output>
80% of x.   80% of x= 72 + 2/3 of 72   80/100x = 120   x = 150.   Answer: Option 150
<result>E</result>
In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is 2/3 of the number of students of 8 years of age which is 72. What is the total number of students in the school?