## Introduction to Data Interpretation

#### Data Interpretation

Direction: Pie-charts show the expenses on various heads in construction of a house. Study the pie-chart.

1. The percentage increase in the amount spent on labour from 1991 to 2001, given that the total amount spent on the construction of the house is \$ 3,60, 000 in 1991 and \$ 8,64,000, in 2001 is

1. Expenditure on labourers :

 Year 1991 ⇒ 360000 × 90 360

= \$ 90000
 Year 2001 ⇒ 864000 × 100 360

= \$ 240000
Percentage increase
 = 240000 - 90000 × 100 90000

 = 1500 = 166.7% 9

##### Correct Option: E

Expenditure on labourers :

 Year 1991 ⇒ 360000 × 90 360

= \$ 90000
 Year 2001 ⇒ 864000 × 100 360

= \$ 240000
Percentage increase
 = 240000 - 90000 × 100 90000

 = 1500 = 166.7% 9

1. What percentage of the total amount is being spent on cement in 1991?

1. ∵ 360° ≡ 100%

 ∴ 108° ≡ 100 × 108 = 30% 360

##### Correct Option: B

∵ 360° ≡ 100%

 ∴ 108° ≡ 100 × 108 = 30% 360

Direction: The adjoining pie-chart shows the proportional expenditure on various items of Amar’s family. If monthly income of Amar is 48,000, answer the questions.

1. How much does he spend more on rent than on transport and education taken together?

1. Difference of percentage = 25 – (5 + 15) = 5%
∴ Required difference

 = 48000 × 5 = \$ 2400 100

##### Correct Option: A

Difference of percentage = 25 – (5 + 15) = 5%
∴ Required difference

 = 48000 × 5 = \$ 2400 100

1. How much does he save per month?

1. Savings per month = 8%
∴ Required savings

 = 48000 × 8 = \$ 3840 100

##### Correct Option: C

Savings per month = 8%
∴ Required savings

 = 48000 × 8 = \$ 3840 100

1. If 10% of miscellaneous expenditure is earmarked for clothing, how much amount is spent on clothes?

1. Expenses on clothes

 = 48000 × 30 × 10 100 100

= \$ 1440

##### Correct Option: B

Expenses on clothes

 = 48000 × 30 × 10 100 100

= \$ 1440