Percentage - Data Intensity 1 :: Discussion


7.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 48. What is the total number of students in the school?
A.72
B.80
C.120
D.100
Answer:  Option  D
Explanation:

Let the number of students be x. Then,

Number of students above 8 years of age = (100 - 20)% of x = 80% of x.

80% of x = 48 + 2 of 48
3
80 x = 80
100

x = 100.

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Published by:Michael Daani

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