2 Answers

The table above shows the number of pupils in a class with respect to their ages

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Age in years7891011
No of pupils41330449

The table above shows the number of pupils in a class with respect to their ages. If a pie chart is constructed to represent the age, the angle corresponding to 8 years old is…

  • A. 13°
  • B. 46.8°
  • C. 56.3°
  • D. 48.6°

QUICK ANSWER…

B

SOLUTION 

The total angle at the center of a pie chart is 360°,

To calculate the angle corresponding to the age of 8, we find the ration of the number of people with age 8 to the total number of pupils in the class, and then multiply by 360.

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Total number of pupils in the class = 4 + 13 + 30 + 44 + 9 = 100

The fraction of 360°, that will be given for age 8 will be:

(13/100) X 360 = 46.8°

Now for the right answer to the above question:

  1. Option A is incorrect.
  2. Option B is correct.
  3. C is incorrect.
  4. D is not the correct answer.

QUICK TIPS…

You may please note these/this:

  • Angle corresponding to any number in a pie chart can be gotten by finding the ratio of this number to the total, and then multiply by 360.

Use the questions and answer session to correct, express, and deal further on this topic.

/culled from 2019 JAMB-UTME mathematics question 4/

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