Q31. The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. What is the average of the remaining two numbers?
A. 4.6
B. 7.3
C. 3.6
D. 6.5
Q32. The average monthly salary of 20 employees in an organisation is Rs. 1500. If the manager’s salary is added, then the average salary increases by Rs. 100. What is the manager’s monthly salary?
A. 3700
B. 3900
C. 3600
D. 3800
Q33. The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is
A. 60
B. 50
C. 30
D. 40
Q34. David obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ?
A. 68
B. 60
C. 75
D. 65
Q35. If the arithmetic mean of seventy-five numbers is calculated, it is 35. if each number is increased by 5, then mean of new numbers is :
A. 30
B. 50
C. 60
D. 40
Q36. Ian has 14 boxes of paper and divides them evenly between 4 coworkers. How many whole boxes did each coworker get?
A. 3
B. 2
C. 2.5
D. 3.5
Q37. The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years, The ratio of the number of boys to the number of girls in the class is :
A. 4 : 5
B. 2 : 3
C. 1 : 2
D. 3 : 4
Q38. 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 of them are correct in their estimation, what is the average of different probable weights of Arun?
A. 88.5 kg
B. 55.5 kg
C. 66.5 kg
D. 77.5 kg
Q39. The average temperature of the town in the first four days of a month was 58 degrees. The average for the second, third, fourth, and fifth days was 60 degrees. If the temperatures of the first and fifth days were in the ratio 7:8, then what is the temperature on the fifth day?
A. 64 degrees
B. 65 degrees
C. 62 degrees
D. 66 degrees
Q40. 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?
A. 23,9
B. 8,7
C. 16,12
D. 10,16
