Line chart
Direction: Study the following graph carefully and answer the questions given below.
 What is the approximate average number of constructions (constructed, demolished and redeveloped) in the city R?

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Average number of constructions in City R = (number of constructed building + number of demolished building + number of redeveloped building )/3
Correct Option: B
Average number of constructions in City R = (number of constructed building + number of demolished building + number of redeveloped building )/3
Average number of constructions in City R = 150 + 225 + 250/3 = 625/3 = 208.33 Approximate 208 %
 What is the respective ratio of the number of building demolished in city T to the number of buildings redeveloped in city P?

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Required ratio = number of building demolished in City T / number of buildings redeveloped in city P
Correct Option: D
Required ratio = number of building demolished in City T / number of buildings redeveloped in city P
Required ratio = 175 : 300 = 7 : 12
 What is the difference between the total constructions (constructed, demolished and redeveloped) in city Q and city T?

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Total constructions in City Q = constructed building + demolished building + redeveloped building
Total constructions in City T = constructed building + demolished building + redeveloped buildingCorrect Option: B
Total constructions in City Q = constructed building + demolished building + redeveloped building
Total constructions in City Q = 100 + 175 + 275 = 550
Total constructions in City T = constructed building + demolished building + redeveloped building
Total constructions in City T = 175 + 250 + 300 = 725
Their difference = 725  550 = 175
 The total number of buildings constructed across the cities is approximately what per cent of the total number of buildings redeveloped across the cities?

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Total number of buildings constructed across the cities = 200 + 100 + 225 + 300
Total number of buildings redeveloped across the cities = 300 + 275 + 250Correct Option: C
Total number of buildings constructed across the cities = 200 + 100 + 225 + 300 = 1100
Total number of buildings redeveloped across the cities = 300 + 275 + 250 = 1400
Required percentage = 1100 x 100 /1400 = 78.57% approx. 79%
 What is the average number of buildings demolished across the cities?

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Average number of building = number of building across the cities (P + Q + R + S + T )/5
Correct Option: B
Average number of building = number of building across the cities (P + Q + R + S + T )/5
Average number of building = 50 + 175 + 150 + 75 + 175/5 = 625/5 = 125