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Quiz Discussion

The average of 11 players of a cricket team is decreased by 2 months when two of them aged 17 years and 20 years are replaced by two new players. The average age of the new players is-

Course Name: Quantitative Aptitude

  • 1] 17 years 1 month
  • 2] 17 years 7 months
  • 3] 17 years 11 months
  • 4] 18 years 3 months
Solution
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1
Discuss

The average age of a family of 10 members is 20 years. If the age of the youngest member of the family is 10 years, then the average age of the members of the family just before the birth of the youngest member was approximately.

  • 1]

    27.14 years

  • 2]

    12.5 years

  • 3]

    14.28 years

  • 4]

    1119 years

Solution
10
Discuss

A cricketer had a certain average of runs for his 64 innings. In his 65th innings, he is bowled out for no score on his part. This brings down his average by 2 runs. His new average of runs is :

  • 1] 130
  • 2] 128
  • 3] 70
  • 4] 68
Solution
2
Discuss

Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 runs. His new average is:

  • 1] 20
  • 2] 21
  • 3] 28
  • 4] 32
Solution
3
Discuss

A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is

  • 1]

    285

  • 2]

    276

  • 3]

    280

  • 4]

    290

Solution
4
Discuss

The average sale of car dealership was 15 cars per week. After a promotional scheme the average sale increased to 21 cars per week. The percentage increased in the sale of cars was-

  • 1]

    39.33%

  • 2]

    40%

  • 3]

    4267%

  • 4]

    140%

Solution
5
Discuss

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

  • 1] 41%
  • 2] 56%
  • 3] 40%
  • 4] 38%
  • 5] 39%
Solution
6
Discuss

If the mean of 4 observations is 20, when a constant 'c' is added to each observation, the mean becomes 22. The value of c is :

  • 1]

    6

  • 2]

    -2

  • 3]

    2

  • 4]

    4

Solution
7
Discuss

The average of a group of men is increased by 5 years when a person aged of 18 years is replaced by a new person of aged 38 years. How many men are there in the group?

 

  • 1] 3
  • 2] 4
  • 3] 5
  • 4] 6
  • 5] 7
Solution
8
Discuss

Find the average of all the numbers between 6 and 34 which are divisible by 5 -

  • 1] 18
  • 2] 20
  • 3] 24
  • 4] 30
Solution
9
Discuss

The average (arithmetic mean) of 330, 360 and 390 is :

  • 1]

    327+357+387

  • 2]

    329+359+389

  • 3]

    360

  • 4]

    3177

Solution
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