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The following table shows the number of boys and the number of girls in 5 different classes, C1 to C5, of a school.
Class Boys Girls
C1 25 25
C2 30 20
C3 15 25
C4 28 32
C5 26 24
The number of boys in C5 is approximately what percent of the average number of girls per class?

  1. A
    98.67%
  2. B
    111.23%
  3. C
    91.86%
  4. D
    103.17%

Solution & Step-by-step Explanation

First, find the total number of girls across all 5 classes:
Total girls=25+20+25+32+24=126
Next, find the average number of girls per class:

Average girls=
5
126
​
=25.2
The number of boys in class C5 is 26.

We need to find what percent 26 is of 25.2:

Percentage=(
25.2
26
​
)×100≈103.174%

Practice this question

Try it yourself before checking the explanation above.

The following table shows the number of boys and the number of girls in 5 different classes, C1 to C5, of a school.
Class Boys Girls
C1 25 25
C2 30 20
C3 15 25
C4 28 32
C5 26 24
The number of boys in C5 is approximately what percent of the average number of girls per class?
A
98.67%
B
111.23%
C
91.86%
D
103.17%

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