(1-5) Consider the following table which contains year-wise data of installed Renewable Energy capacity for four countries (X, Y, Z, T) over a period of 5 years from 2015 to 2019.
| Year/Country | X | Y | Z | T |
| 2015 | 10 | 15 | 8 | 12 |
| 2016 | 13 | 18 | 10 | 13 |
| 2017 | 15 | 20 | 12 | 15 |
| 2018 | 20 | 20 | 15 | 18 |
| 2019 | 22 | 24 | 20 | 20 |
1. Taking all four countries together, what is the overall increase (%) in installed capacity of renewable energy in the year 2019, with reference to 2015?
1. 52.32%
2. 91.11 %
3. 117.32%
4. 121.81 %
SHOW ANSWER
Explanation: 86 – 45 x 100 = 91.11%
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2. Between 2016 to 2017, which country registered maximum growth (%) in installed capacity of Renewable Energy?
1. X
2. Z
3. Y
4.T
SHOW ANSWER
Explanation: x= 15-13 / 13 = 15.38
y= 20-18 / 18 = 11.11
z= 12-10 / 10 = 20
t= 15-13 / 13 = 15.38
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3. In any given year, compared to the previous year, which country(s) registered maximum growth (%)?
1. T
2. Z and Y
3. Y
4. X and Z
SHOW ANSWER
Explanation: X = 22-10 / 10 = 12/10 = 1.2
Y= 24-15 / 15= 0.6
Z= 20-8 / 8 = 1.5
T= 20-12 / 12 = 0.66
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4. Which country registered maximum growth (%) by 2019 with reference to 2015?
1. Z
2.T
3. X
4. Y
SHOW ANSWER
Explanation: Z register maximum growth rate every year
By options Y is constant in between so can not be answer of maximum growth Hence X and Z is answer
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5. For the country ‘Y’, what is the average annual growth (%) of renewable energy capacity?
1. ~10.85 %
2.~12.77 %
3.~13.25 %
4. ~11.65 %
SHOW ANSWER
Explanation: 2016 (18-15)/15 = 20
2017 (20-18)/18= 11.11
2018 (20-20)/20= 0
2019 (22-20)/20= 20
Total =51.11
Avg= 51.11/4= 12.775
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(6-10) The following table embodies the details about the students of the different departments’ AB and C in a university for participating in the blood donation camp.
Participation in Blood Donation Camp – Data
| Department | Percentage of girls | Percentage of blood donating girls* | Number of blood donating boys* | |
| A | 25 | 40 | 48 | |
| B | 40 | 50 | 75 | |
| C | 30 | 70 | 39 |
6. The number of girls in the department ‘A’ who donated blood is:
1. 32
2. 130
3. 55
4. 48
SHOW ANSWER
Explanation: 48/60 x 100 = 80 total donated
80-48 = girls= 32
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7. The number of students who donated blood in the department ‘C’ is:
1. 39
2. 91
3. 130
4. 169
SHOW ANSWER
Explanation: 39/30 x 100= 130
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8. If 45 boys from the department ‘B’ did not donate blood, then the total number of students in the department ‘B’ is:
1. 120
2. 150
3. 80
4. 200
SHOW ANSWER
Explanation: 75 + 45 = 120
(120/60) x 100= 200
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9. In case all the girls in the department ‘A’ donated blood, then the number of boys in the department ‘A’ who did not participate in the blood donation camp is:
1. 32
2. 48
3. 60
4. 56
SHOW ANSWER
Explanation: 40 x 100 = 160
25 160 x 40%= 64 girls donated blood
160- 64- 48= 48 not participated
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10. What is the ratio of the number of blood donors in the department ‘A’ compared to the number of blood donors in ‘B’?
1. 1:5
2. 2:5
3. 9:16
4. 8:15
SHOW ANSWER
Explanation: 48/60 x 100 =80
75/50 x 100= 150
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