Examples (Revised) - Chapter 5 - Data Handling - Ncert Solutions class 8 - Maths

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Chapter 4 - Data Handling | NCERT Solutions for Class 8 Maths

Example 1:

Adjoining pie chart (Fig 4.4) gives the expenditure (in percentage) 

on various items and savings of a family during a month.
(i) On which item, the expenditure was maximum?
(ii) Expenditure on which item is equal to the total savings of the family?
(iii) If the monthly savings of the family is $₹ 3000$, what is the monthly expenditure on clothes?

Solution:
(i) Expenditure is maximum on food.
(ii) Expenditure on Education of children is the same (i.e., $15 \%$ ) as the savings of the family.

(iii) $15 \%$ represents ₹ 3000
Therefore, $10 \%$ represents $₹ \frac{3000}{15} \times 10=₹ 2000$

Example 2:

On a particular day, the sales (in rupees) of different items of a baker's shop are given below.

Draw a pie chart for this data. 

Solution:

We find the central angle of each sector. Here the total sale $=₹ 720$. We thus have this table.

 Now, we make the pie chart (Fig 4.5):