UGC NET Paper-1 24-September-2020 Shift – Evening Question With Solution

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Explanation:

Total Capacity of Reneable Energy in the year 2015 = 10 + 15 + 8 +12 = 45
Total Capacity of Reneable Energy in the year 2019 = 22 + 24 + 20 + 20 = 86

Formula:

Increase Percentage
= (Total Capacity in year 2019 – Total Capacity in year 2015) X 100 / Total Capacity in year 2015
= (86 – 45) X 100 / 45
= 4100 / 45
= 91.11 %

91.11 % is over-all increase (%) in installed capacity of Reneable Energy in the year 2019, with reference to 2015.

So, The Correct Answer is Option (II).

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Explanation:

Formula :
Growth Percentage = (Final value – Initial value) X 100 / Initial value
Average Growth = Total Growth / Number of Growth Years

The Growth Percentage in Year 2015 & 2016 = (18-15) X 100 / 15 = 300/15 = 20 %
The Growth Percentage in Year 2016 & 2017 = (20-18) X 100 / 18 = 200/18 = 11.11 %
The Growth Percentage in Year 2017 & 2018 = (20-20) X 100 / 20 = 0/20 = 0 %
The Growth Percentage in Year 2015 & 2016 = (24-20) X 100 / 20 = 400/20 = 20 %

Total in Given 5 years = 20% + 11.11% + 0% + 20% = 51.11%

Average Growth = 51.11% / 4 = 12.77%

Note:
Don’t be confused with Number of Years. Total 5 Years are given, but Total Growth Years are only 4.

For the country â€˜Yâ€™ , 12.77 % is the average annual growth (%) of Renewable Energy capacity.

So, The Correct Answer is Option (II).