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Hassan
1.In an examination a pupil�s average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?
A. 8
B. 9
C. 10
D. 8
2.The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is____?
A. 20
B. 21
C. 22
D. 20
3.The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is___?
A. 45
B. 50
C. 51.4 approx.
D. 45
4.The average age of a 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. 35 years
B. 30 years
C. 40 years
D. 35 years
5.A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, there by increasing his average by 6 runs. His new average is___?
A. 48 runs
B. 52 runs
C. 55 runs
D. 48 runs
6.The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average of the team?
A. 23 years
B. 24 years
C. 25 years
D. 23 years
7.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. Rs. 2000
B. Rs. 2400
C. Rs. 3600
D. Rs. 2000
8.The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is___?
A. Rs. 3500
B. Rs. 4000
C. Rs. 4050
D. Rs. 3500
9.The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is__?
A. 17 kg
B. 20 kg
C. 26 kg
D. 17 kg
10.The average age of 15 students of a class is 15 years. Out of these, the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is___?
A. 11 years
B. 14 years
C. 15 years
D. 11 years
11.A pupil�s marks were wrongly entered as 83 instead of 63. Due to the average marks for the class got increased by half. The number of pupils in the class is___?
A. 10
B. 20
C. 40
D. 10
12.The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is___?
A. 35.2
B. 36.1
C. 36.5
D. 35.2
13.If the arithmetic mean of seventy five numbers is calculated, it is 35. If each number is increased by 5, then mean of new number is__?
A. 30
B. 40
C. 70
D. 30
14.In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the rate in the remaining 40 overs to reach the target of 282 runs?
A. 6.25
B. 6.5
C. 6.75
D. 6.25
15.The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4?
A. 2
B. 4
C. 70
D. 2
16.The average of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?
A. 15 years
B. 17 years
C. 18 years
D. 15 years
17.The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is____?
A. 25
B. 27
C. 30
D. 25
18.A library has an average of 510 visitors on Sunday and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is___?
A. 250
B. 276
C. 280
D. 250
19.A family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?
A. 28 4/7 years
B. 31 5/7 years
C. 32 1/7 years
D. 28 4/7 years
20.The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?
A. 2
B. 5
C. 8
D. 2
21.The average of non-zero number and its square is 5 times the number. The number is___?
A. 9
B. 17
C. 29
D. 9
22.The average of the two-digit numbers, which remain the same when the digits interchange their positions, is____?
A. 33
B. 44
C. 55
D. 33
23.The average of first five multiples of 3 is_____?
A. 3
B. 9
C. 12
D. 3
24.Find the average of all the numbers between 6 and 34 which are divisible by 5.
A. 18
B. 20
C. 24
D. 18
25.The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
A. 0
B. 1
C. 10
D. 0
26.Sarfaraz obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?
A. 65
B. 69
C. 72
D. 65
27.A total of 3000 chocolates were distributed among 120 boys and girls such that each boy received 2 chocolates and each girl received 3 chocolates. Find the respective number of boys and girls?
A. 70, 50
B. 60, 60
C. 50, 70
D. 70, 50
28.Rs. 6000 is lent out in two parts. One part is lent at 7% p.a simple interest and the other is lent at 10% p.a simple interest. The total interest at the end of one year was Rs. 450. Find the ratio of the amounts lent at the lower rate and higher rate of interest?
A. 5:01
B. 4:01
C. 3:02
D. 5:01
29.A trader purchased two colour televisions for a total of Rs. 35000. He sold one colour television at 30% profit and the other 40% profit. Find the difference in the cost prices of the two televisions if he made an overall profit of 32%?
A. Rs. 21000
B. Rs. 17500
C. Rs. 19000
D. Rs. 21000
30.The average weight of a group of persons increased from 48 kg to 51 kg, when two persons weighing 78 kg and 93 kg join the group. Find the initial number of members in the group?
A. 21
B. 22
C. 23
D. 21
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