Quiz Discussion

The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is :

Course Name: Quantitative Aptitude

  • 1] 35
  • 2] 45
  • 3] 55
  • 4] 65
Solution
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# Quiz
1
Discuss

In the first 10 overs of a cricket game, the run rate was only 3.2. The run rate in the remaining 40 overs to reach the target of 282 run is :

  • 1] 6.4
  • 2] 6.3
  • 3] 6.25
  • 4] 6.5
Solution
2
Discuss

The average of five different positive numbers is 25. x is the decrease in the average when the smallest number among them is replaced by 0. What can be said about x?

  • 1] x is less than 5
  • 2] x is greater than 5
  • 3] x is equal to 5
  • 4] Cannot be determined
Solution
3
Discuss

The average annual income (in Rs.) of certain agricultural workers is S and that of other workers is T. The number of agricultural workers is 11 times that of other workers. Then the average monthly income (in Rs.) of all the workers is 

  • 1]

    (S+T)/2

  • 2]

    (S+11T)/2

  • 3]

    (1/11S)+T

  • 4]

    (11S+T)/12

Solution
4
Discuss

The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is-

  • 1] 45
  • 2] 50
  • 3] 51.4 approx
  • 4] 54.6 approx
Solution
5
Discuss

Find the average of the following sets of scores:385, 441, 876, 221, 536, 46, 291, 428

  • 1] 221
  • 2] 403
  • 3] 428
  • 4] 536
  • 5] None of these
Solution
6
Discuss

A passenger travels from Delhi to Merut at a speed of 30 kmph and return with a speed of 60 kmph. What is the average speed?

  • 1] 40
  • 2] 45
  • 3] 50
  • 4] 48
Solution
7
Discuss

The average age of P, Q and R is 15 years more than R's age. If the total age of P and Q together is 39 years, then R's age is ?

  • 1] 12 years
  • 2] 24 years
  • 3] 16 years
  • 4] 14 years
Solution
8
Discuss

The average age of four boys A, B, C and D is 5 years and the average age A, B, D, E is 6 years. C is 8 years old. The age of E is (in years) :

  • 1] 12
  • 2] 13
  • 3] 14
  • 4] 15
Solution
9
Discuss

A cricketer whose bowling average is 12.4 runs per wicket takes 5 wickets for 26 runs and thereby decreased his average by 0.4. The number of wickets taken by him the last match was-

  • 1] 64
  • 2] 72
  • 3] 80
  • 4] 85
Solution
10
Discuss

A batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning.

  • 1] 40
  • 2] 39
  • 3] 52
  • 4] 55
Solution
# Quiz