 ## SSC CHSL Quantitative Aptitude Test 20

Instructions

For the following questions answer them individually

Q 1

The average of ten numbers is 72. The average of the first four numbers is 69 and that of the next three numbers is 74. The $$8^{th}$$ number is 6 more than the $$9^{th}$$ number and 12 more than the $$10^{th}$$ number. What is the average of the $$8^{th}$$ and $$9^{th}$$ numbers?

Q 2

If $$\left(x^3 + \frac{1}{x^3} - k\right)^2 + \left(x + \frac{1}{x} - p\right)^2 = 0$$ where k and p are real numbers and x ≠ 0, then $$\frac{k}{p}$$ is equal to:

Q 3

Study the pie-chart and answer the question:

Total Number of Employees =1400

The total number of employees of the company working in production and IT department exceeds the total number of employees working in the Marketing and Accounts departments by ........

Q 4

The average age of husband, wife and child 7 years ago was 42 years and that of wife and child 9 years ago was 36 years. The presentage of the husband is:

Q 5

The average of 19 numbers is 22.8. The average of the first ten numbers is 18.4 and that of the last ten numbers is 28.6. If the $$10^{th}$$ number is excluded from the given numbers, then what is the average of the remaining numbers? (Your answer should be nearest to an integer.)