Average on Arithmetic Aptitude related Questions and Answers

Question 1 : The average of 20 students is 12 years, if the teacher's age included, average increases by one. The age of the teacher is:
1. 43 yrs
2. 33 yrs
3. 35 yrs
4. 37 yrs
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Question 2 : A passenger travels from Delhi to Merut at a speed of 30 kmph and return with a speed of 60 kmph. What is the average speed?
1. 40
2. 45
3. 50
4. 48
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Question 3 : A has 50 coins of 10 paise denominations. While B has 10 coins of 50 paise denominations. C has 20 coins of 25 paise denominations while D has 25 coins of 20 paise denominations. The average number of paise per person is :
1. 450 paise
2. 500 paise
3. 570 paise
4. 540 paise
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Question 4 : The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 and of girls is 40 kg. The number of boys is:
1. 50
2. 60
3. 70
4. 65
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Question 5 : The average age of A, B, C, D and E is 40 years. The average age of A and B is 35 years and the average of C and D is 42 years. Age of E is :
1. 48
2. 46
3. 42
4. 45
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Question 6 : A man started his journey from Lucknow to Kolkata, which is 200 km, at the speed of 40 kmph then he went to Banglore which is 300 km, at the speed of 20 kmph. Further he went to Ahamdabad which is 500 km, at the speed of 10 kmph. The average speed of the man is :
1. 14(2/7) kmph
2. 14(5/7) Kmph
3. 15
4. 16
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Question 7 : A cricketer scored some runs in his 21st innings, as a result, his average runs increased by 3. If the present average run is 40, how many runs he scored in the final innings?
1. 103
2. 100
3. 85
4. 82
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Question 8 : Average of 80 numbers are 42. 5 more numbers included, the average of 85 numbers become 45. Find the average of 5 numbers.
1. 82
2. 89
3. 93
4. 98
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Question 9 : Five years ago, the average age of A, B, C and D was 45 yr. with E joining them now, the average of all the five is 49 yr. How old is E?
1. 25 yr
2. 40 yr
3. 45yr
4. 64 yr
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Question 10 : A man travels equal distances of his journey at 40, 30 and 15 km/h. respectively. Find his average for whole journey.
1. 24
2. 25
3. 27
4. 28
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