Introduction to Data Interpretation
Direction: The pie chart given below represents the modes of transport for 1400 officers of the Staff Selection Commission, Kolkata.
Study the chart and answer the following questions.

- The number of officers who go to office by Metro Rail is
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Number of Metro rail users
= 1400 × 8 = 112 100 Correct Option: C
Number of Metro rail users
= 1400 × 8 = 112 100
- Write down the difference : (officers availing train – officers availing car)
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Required difference = (36 – 21)% of 1400
= 1400 × 15 = 210 100 Correct Option: A
Required difference = (36 – 21)% of 1400
= 1400 × 15 = 210 100
- The ratio of two-wheelers and cars being used as modes of transport is
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Two wheelers : cars
= 15 : 21
= 5 : 7Correct Option: C
Two wheelers : cars
= 15 : 21
= 5 : 7
Direction: Pie-charts show the expenses on various heads in construction of a house. Study the pie-chart.

- If the total cost of constructing the house is $ 3,60,000 in 1991 and $ 8,64,000, in 2001, what is the amount spent on Steel in 1991 and 2001?
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Expenditure on steel :
Year 1991 ⇒ 360000 × 50 360
= $ 50000Year 2001 ⇒ 864000 × 60 360
= $ 144000Correct Option: D
Expenditure on steel :
Year 1991 ⇒ 360000 × 50 360
= $ 50000Year 2001 ⇒ 864000 × 60 360
= $ 144000
- 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
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Expenditure on labourers :
Year 1991 ⇒ 360000 × 90 360
= $ 90000Year 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
= $ 90000Year 2001 ⇒ 864000 × 100 360
= $ 240000
Percentage increase= 240000 - 90000 × 100 90000 = 1500 = 166.7% 9