1)The following table shows the imports and exports (in Rs.crore) of a country over 4 years (2016 to 2019).
The average trade balance (in Rs.crores) is:
SSC CGL 2020
8
Trade balance (in Rs.crores) in 2016 = 130 - 125 = 5;
Trade balance (in Rs.crores) in 2017 = 150 - 145 = 5;
Trade balance (in Rs.crores) in 2018 = 175 - 165 = 10;
Trade balance (in Rs.crores) in 2019 = 200 - 188 = 12;
Average trade balance (in Rs.crores) = \({5 + 5 +10 + 12\over4}= {32\over4}=Rs.8 \) crores
2)Study the following table and answer the question. Expenditures of a Company (in Lakh Rupees) per annum over the given years.
Total expenditure on all the items in 2014 was approximately what percent of the total expenditure in 2018?
SSC CGL 2020
66.32%
Total expenditure on all the items in 2014 = 284 + 98 + 3 + 23.4 + 74 = 482.4;
Total expenditure on all the items in 2018 = 425 + 141 + 3.96 + 49.4 + 108 = 727.36;
Required percentage =\( \frac{482.4}{727.36} \times 100\) = 66.32%
3)The following table gives the frequency of vowels used in the page of a book.
As per the given data, which vowels occur less than 80 times?SSC CGL 2020
a, o, u
According to the given data, vowels which are used less than 80 times a, o, u.
4)The following table shows the income(in rupees) for a particular month, together with their source, in respect of 5 employees (A, B, C, D and E).
For employee D, the income from overtime is what percentage of his total income?
SSC CGL 2020
6.25%
Income of employee D from overtime = Rs. 2500; Total income = Rs. 40000; Required percent = \({2500\over 40000}\times100\) = 6.25%
5)As per data shown in the following table, what is the percentage of students who got less than 50 marks?
SSC CGL 2020
48%
Number of students who got less than 50 marks = 5 + 11 + 18 + 38 = 72;
Total number of students = 5 + 11 + 18 + 38 + 39 + 24 + 15 = 150;
Percentage of students who got less than 50 marks = \({72\over150}\times100\) = 48%
6)The following table shows the number of students enrolled in different streams in a particular college.
The ratio of the number of girls studying Arts to the number of girls studying in all other streams is:
SSC CGL 2020
1 : 2
Number of girls studying Arts = 45;
Number of girls studying in all other streams = 18 + 42 + 30 = 90;
The ratio of the number of girls studying Arts to the number of girls studying in all other streams = 45 : 90 = 1 : 2
7)The following table shows the items of expenditure of a company(in ₹ lakh per annum), from 2015 to 2019.
What is the average amount of interest per year which the company had to pay during this period?
SSC CGL 2020
Rs. 34.7 lakh
Average amount of interest per year which the company had to pay during this period = \(\frac{23.5 + 30 + 40 + 35 + 45}{5} \)= 173.5/5 = 34.7 lakh
8)The following table showing the percentage of the total population of a state in different age groups.
Out of every 50,000 people, find the approximate number of persons below the age of 35.
SSC CGL 2020
25,250
Percentage of persons below the age of 35 = 31 + 5.25 + 14.25 = 50.5%;
Approximate number of persons below the age of 35 = \(50000\times{50.5\over100}=25250\)
9)The following table shows the percentage of marks obtained by seven students in six different subjects in an examination.
What are the average marks obtained by all the seven students in Physics? (rounded off to two digits after the decimal)
SSC CGL 2020
89.14
Average marks obtained in physics = \({1\over7}[{120\over100}(80+90+70+80+65+85+50)] = 89.14\)
10)The following table shows the age-wise brand ownership of mobile phone handsets.
If a total of 5000 ‘C’ mobile phone sets are sold till date, then how many are more than one year old?
SSC CGL 2020
4500
Number of mobile phone sets are sold till date = 5000;
Percentage mobile phone sets are sold more than one year old = 10 + 10 + 70 = 90%;
No. of mobile phones 'C' which are more than one year old = \(= 5000 \times \frac{90}{100} = 4500\)