Quiz Discussion

Find the average increase rate, if increase in the population in the first year is 30% and that in the second year is 40%.

Course Name: Quantitative Aptitude

  • 1] 41%
  • 2] 56%
  • 3] 40%
  • 4] 38%
  • 5] 39%
Solution
No Solution Present Yet

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# Quiz
1
Discuss

The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is :

  • 1] 40 years
  • 2] 35 years
  • 3] 50 years
  • 4] None of the options
Solution
2
Discuss

The average age of 30 students is 9 years. If the age of their teacher is included, the average age becomes 10 years. The age of the teacher (in years) is :

  • 1] 27
  • 2] 31
  • 3] 35
  • 4] 40
Solution
3
Discuss

The average of the ages of Sumit, Krishna and Rishabh is 43 and the average of the ages of Sumit, Rishabh and Rohit is 49. If Rohit is 54 years old, what is Krishna’s age?

  • 1] 24 years
  • 2] 36 years
  • 3] 45 years
  • 4] Cannot be determined
  • 5] None of these
Solution
4
Discuss

A cricketer scored some runs in his 21st innings, as a result, his average runs increased by 3. If the present average run is 40, how many runs he scored in the final innings?

  • 1] 103
  • 2] 100
  • 3] 85
  • 4] 82
Solution
5
Discuss

The average of the first 100 positive integers is-

  • 1] 49.5
  • 2] 50.5
  • 3] 51
  • 4] 100
Solution
6
Discuss

The average of X1, X2 and X3 is 14. Twice the sum of X2 and X3 is 30. What is the value of X1?

  • 1] 12
  • 2] 16
  • 3] 20
  • 4] 27
Solution
7
Discuss

Four years ago, the average age of a family of four persons was 18 years. During this period, a baby was born. Today if the average age of the family is still 18 years, the age of the baby is

  • 1] 1.2 years
  • 2] 2 years
  • 3] 2.5 years
  • 4] 3 years
Solution
8
Discuss

The average of four consecutive even numbers is 15. The 2nd highest number is :

  • 1] 12
  • 2] 18
  • 3] 14
  • 4] 16
Solution
9
Discuss

30 pens and 75 pencils altogether were purchased for Rs. 510. If the average price of a pencil was Rs. 2, what was the average price of a pen ?

  • 1] Rs. 9
  • 2] Rs. 10
  • 3] Rs. 11
  • 4] Rs. 12
Solution
10
Discuss

The average of x number is y and average of y numbers is x. Then the average of all the numbers taken together is

  • 1]

    (x+y)/2xy

  • 2]

    2xy/(x+y)

  • 3]

    (x2+y2)/(x+y)

  • 4]

    xy/(x+y)

Solution
# Quiz