Quiz Discussion

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?

Course Name: Quantitative Aptitude

  • 1]

    0

  • 2]

    -1

  • 3]

    1

  • 4]

    None Of These

Solution
No Solution Present Yet

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# Quiz
1
Discuss

The average of two numbers is XY. If one number is X, the other is-

  • 1]

    Y/2

  • 2]

    Y

  • 3]

    2XY - X

  • 4]

    X (Y - 1)

Solution
2
Discuss

The average of the first five multiples of 3 is-

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

The average weight of 47 balls is 4 g. if the weight of the bag (in which the balls are kept) be included; the calculated average weight per ball increases by 0.3 g. What is the weight of the bag?

  • 1] 14.8 g
  • 2] 14.4 g
  • 3] 15 g
  • 4] 18.6 g
  • 5] None of these
Solution
4
Discuss

The average age of A, B, C, D and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years. Age of E is :

  • 1] 48 years
  • 2] 46 years
  • 3] 42 years
  • 4] 45 years
Solution
5
Discuss

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

  • 1] 12
  • 2] 18
  • 3] 14
  • 4] 16
Solution
6
Discuss

Distance between two stations A and B is 778km. A train covers the journey from A to B at 84 km per hour and returns back to A with a uniform speed of 56 km per hour. Find the average speed of train during the whole journey.

  • 1]

    60 km/hr

  • 2]

    30.5 km/hr

  • 3]

    57 km/hr

  • 4]

    67.2 km/hr

Solution
7
Discuss

Mukesh has twice as much money as Soham. Soham has 50% more money than Pankaj. If the average money with them is Rs. 110, then Mukesh has :

  • 1] Rs. 155
  • 2] Rs. 160
  • 3] Rs. 180
  • 4] Rs. 175
Solution
8
Discuss

The average income of A, B and C is Rs. 12,000 per month and average income of B, C and D is Rs. 15,000 per month. If the average salary of D be twice that of A, then the average salary of B and C is in Rs. :

  • 1] 8,000
  • 2] 18,000
  • 3] 13,500
  • 4] 9,000
Solution
9
Discuss

The mean weight of 34 students of a school is 42 kg. If the weight of the teacher be included, the mean rises by 400 grams. Find the weight of the teacher (in kg.)

  • 1] 55 kg
  • 2] 57 kg
  • 3] 66 kg
  • 4] 56 kg
Solution
10
Discuss

A cricketer has a certain average for 9 innings, In the tenth inning he scores 100 runs there by increasing his average by 8 runs. His new average is 

  • 1]

    28 runs

  • 2]

    24 runs

  • 3]

    32 runs

  • 4]

    20 runs

Solution
# Quiz