Quiz Discussion

The average weight of 21 boys was recorded as 64 kg. If the weight of the teacher was added, the average increased by 1 kg. What was the teacher’s weight?

Course Name: Quantitative Aptitude

  • 1] 86 kg
  • 2] 64 kg
  • 3] 72 kg
  • 4] 84 kg
Solution
No Solution Present Yet

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# Quiz
1
Discuss

In a boat there are 8 men whose average weight is increased by 1 kg when 1 man of 60 kg is replaced by a new man. What is weight of new comer?

 

  • 1] 70 kg
  • 2] 66 kg
  • 3] 68 kg
  • 4] 69 kg
Solution
2
Discuss

The average pocket money of 3 friend A, B, C is Rs. 80 in a particular month. If B spends double and C spends triple of what A spends during that month and if the average of their unspent pocket money is Rs. 60, then A spends (in Rs.)-

  • 1] Rs. 10
  • 2] Rs. 20
  • 3] Rs. 30
  • 4] Rs. 40
Solution
3
Discuss

The average of 10 items was found to be 80 but while calculating, one of the items was counted as 60 instead of 50. Then the correct average would have been :

  • 1] 69
  • 2] 79.25
  • 3] 79
  • 4] 79.5
Solution
4
Discuss

The average of six numbers is x and the average of three of these is y. If the average of the remaining three is z, then-

  • 1] x = y + z
  • 2] 2x = y + z
  • 3] x = 2y + 2z
  • 4] None of these
Solution
5
Discuss

In Arun's opinion, his weight is greater than 65 kg but less than 72 kg. His brother does not agree with Arun and he thinks that Arun's weight is greater than 60 kg but less than 70 kg. His mother's view is that his weight cannot be greater than 68 kg. If all are them are correct in their estimation, what is the average of different probable weights of Arun?

  • 1] 67 kg.
  • 2] 68 kg.
  • 3] 69 kg.
  • 4] Data inadequate
Solution
6
Discuss

Mean of 10 numbers is 30. Later on it was observed that numbers 15, 23 are wrongly taken as 51, 32. The correct mean is :

  • 1] 25.5
  • 2] 32
  • 3] 30
  • 4] 34.5
Solution
7
Discuss

The present age of a father is 3 years more than three times the age of his son. Three years hence, father's age will be 10 years more than twice the age of the son. The father's age is :

  • 1] 33 years
  • 2] 39 years
  • 3] 45 years
  • 4] 40 years
Solution
8
Discuss

The average weight of 3 men, A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E whose weight is 3 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 79 kg. What is the weight of A ?

  • 1] 70 kg
  • 2] 72 kg
  • 3] 75 kg
  • 4] 80 kg
Solution
9
Discuss

Average of 80 numbers are 42. When 5 more numbers are included, the average of 85 numbers become 45. Find the average of 5 numbers.

  • 1] 82
  • 2] 89
  • 3] 93
  • 4] 98
Solution
10
Discuss

A team of 8 persons joins in a shooting competition. The best marksman scored 85 points. If he had scored 92 points, the average score for the team would have been 84. The number of points the team scored was :

  • 1] 672
  • 2] 665
  • 3] 645
  • 4] 588
Solution
# Quiz