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Quiz Discussion

A shop of electronic goods is closed on Monday. The average daily sales for remaining six days of a week is Rs. 15,640 and the average sale of Tuesday to Saturday is Rs. 14,124. The sales on Sunday is -

Course Name: Quantitative Aptitude

  • 1] Rs. 20,188
  • 2] Data inadequate
  • 3] Rs. 23,220
  • 4] Rs. 21,704
Solution
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1
Discuss

There are 30 students in a class. The average age of first 10 students is 12.5 years. The average age of the remaining 20 students is 13.1 years. The average age (in years) of the students of the whole class is :

  • 1] 12.5 years
  • 2] 12.7 years
  • 3] 12.8 years
  • 4] 12.9 years
Solution
10
Discuss

There are five boxes in cargo hold. The weight of the first box is 200 kg and the weight of the second box is 20% higher than the weight of the third box, whose weight is 25% higher than the first box's weight. The fourth box at 350 kg is 30% lighter than the fifth box. Find the difference in the average weight of the four heaviest boxes and the four lightest boxes.

  • 1] 51.5 kg
  • 2] 75 kg
  • 3] 37.5 kg
  • 4] 112.5 kg
  • 5] None of these
Solution
2
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
3
Discuss

The average of the first 100 positive integers is-

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

The average monthly salary of 12 workers and 3 managers in a factory was Rs. 600. When one of the manager whose salary was Rs. 720, was replaced with a new manager, then the average salary of the team went down to 580. What is the salary of the new manager?

  • 1] 640
  • 2] 690
  • 3] 420
  • 4] 570
Solution
5
Discuss

The average age of 3 children in a family is 20% of the average age of the father and the eldest child. The total age of the mother and the youngest child is 39 years. If the father's age is 26 years, what is the age of the second child ?

  • 1] 15 years
  • 2] 18 years
  • 3] 20 years
  • 4] Cannot be determined
Solution
6
Discuss

A student finds the average of 10 positive integers. Each integer contains two digits. By mistake, the boy interchanges the digits of one number say ba for ab. Due to this, the average becomes 1.8 less than the previous one. What was the difference of the two digits a and b?

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

10 years ago, the average age of a family of 4 members was 24 years. Two children having been born (with age difference of 2 years), the present average age of the family is again 24 years. Then the present age of the youngest child is:

  • 1]

    1 years

  • 2]

    2 years

  • 3]

    3 years

  • 4]

    4 years

Solution
8
Discuss

The mean high temperature of the first four days of a week is 25°C whereas the mean of the last four days is 25.5°C. If the mean of the whole week is 25.2°C then the temperature of the 4th day is :

  • 1] 25°C
  • 2] 25.2°C
  • 3] 25.6°C
  • 4] 25.5°C
Solution
9
Discuss

Average weight of 25 students of a class is 50 kg. If the weight of the class teacher is included , the average is increased by 1 kg. The weight of the teacher is ?

  • 1] 76 kg
  • 2] 77 kg
  • 3] 74 kg
  • 4] 75 kg
Solution
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