41. In a primary school the average weight of male students is 65.9 kg and the average weight of female students is 57 kg. If the average weight of all the students ( both male and female ) is 60.3 kg and the number of male students in the school is 66, what is the number of female students in the school?
42. The average monthly income of P and Q is Rs. 6000; that of Q and R is Rs. 5250; and that P and R is Rs. 5500. What is P’s monthly income?
43. The average weight of a group of 75 girls was calculated as 47 kgs. It was later discovered that the weight of one of the girls was read as 45 kgs. Whereas her actual weight was 25 kgs. What is the actual average weight of the group of 75 girls? ( Rounded off to two digits after decimal).
44. Find the average of the following sets of scores:
385, 441, 876, 221, 536, 46, 291, 428
385, 441, 876, 221, 536, 46, 291, 428
45. If 25a + 25b = 115, what is the average of a and b?
46. The average of two numbers is XY. If one number is X, the other is-
47. The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 400 g. The weight of the teacher is -
48. The average age of an adult class is 40 years. 12 new students with an average age of 32 years join the class, thereby decreasing the average by 4 years. The original strength of the class was-
49. The average of the first five multiples of 3 is-
50. The average of X1, X2 and X3 is 14. Twice the sum of X2 and X3 is 30. What is the value of X1?
Read More Section(Average)
Each Section contains maximum 100 MCQs question on Average. To get more questions visit other sections.