The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs.11.75. Of the remaining two books, if the price of one book is 60% more than the price of the other, what is the price of each of these two books

1.  Rs. 5, Rs.7.50

2.  Rs. 8, Rs. 12

3.  Rs. 10, Rs. 16

4.  Rs. 12, Rs. 14

View Answer  
4
Correct Answer :

Rs. 10, Rs. 16


Explanation :
No Explanation available for this question

In a set of three numbers, the average of first two numbers is 2, the average of the last two numbers is 3, and the average of the first and the last numbers is 4. What is the average of three numbers

1.  2

2.  2.5

3.  3

4.  3.5

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

Of the three numbers, the first is twice the second and the second is twice the third. The average of the reciprocal of the numbers is772. The numbers are:

1.  16, 8, 4

2.  20, 10, 5

3.  24, 12, 6

4.  36, 18, 9

View Answer  
4
Correct Answer :

24, 12, 6


Explanation :
No Explanation available for this question

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.  570

2.  420

3.  690

4.  640

View Answer  
4
Correct Answer :

420


Explanation :
No Explanation available for this question

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.  Nothing can be said

View Answer  
4
Correct Answer :

x is less than 5


Explanation :
No Explanation available for this question

Three math classes: X, Y, and Z, take an algebra test. The average score in class X is 83. The average score in class Y is 76. The average score in class Z is 85. The average score of all students in classes X and Y together is 79. The average score of all students in classes Y and Z together is 81. What is the average for all the three classes

1.  81

2.  81.5

3.  82

4.  84.5

View Answer  
4
Correct Answer :

81.5


Explanation :
No Explanation available for this question

In 2011, the arithmetic mean of the annual incomes of Ramesh and Suresh was Rs. 3800. The arithmetic mean of the annual incomes of Suresh and Pratap was Rs. 4800, and the arithmetic mean of the annual incomes of Pratap and Ramesh was Rs. 5800. What is the arithmetic mean of the incomes of the three

1.  Rs. 4000

2.  Rs. 4200

3.  Rs. 4400

4.  Rs. 4800

View Answer  
4
Correct Answer :

Rs. 4800


Explanation :
No Explanation available for this question

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

View Answer  
4
Correct Answer :

67 kg.


Explanation :
No Explanation available for this question

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

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

What is the actual price per piece

1.  82

2.  41

3.  56

4.  28

View Answer  
4
Correct Answer :

41


Explanation :
No Explanation available for this question
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