Averages Quiz 2 February 7, 2012 by kumar 1. In a school of 20 students in an examination in maths 2 students scored 100 marks each, 3 got zero each and average of the rest was 40.What is the average of the school?A. 30B. 40C. 50D. 60 2. The average age of 30 children is 9 years.If the age of their teacher included,it becomes 10 years.The age of teacher is(In years)A. 31B. 32C. 40D. 38 3. The average age of 35 children in a class is 15 years.If the teacher age is included,the average increase by one year.Find the age of the teacher is(In years)A. 45 B. 50C. 48D. 51 4. The average of 7 numbers is 11,when one number is added ,their combined average is increased by 0.5.What is the new number?A. 15B. 14C. 16D. 13 5. The average of 11 results is 50.If the average of first 6 results is 49 and the average of last 6 is 52.find the 6th result?A. 55B. 56C. 54D. 45 6. The average of of fruits offered in a temple in a week was 75.The average fruits offered in 6 days including Tuesday was 72.how many fruits were offered on tuesday?A. 93B. 84C. 88D. 73 7.A man spends on an average Rs. 2,000 for the first 8 months of a year and Rs.1,800 for the next 4 months of a year.If he saves Rs.3,200 that year.What is his monthly salaryA. Rs.3,200B. Rs.4,500C. Rs.3,000D. Rs.2,200 8.The average of 12 men decreased by one year when two of them of ages 28 years and 32 years are placed by two women of same age.What is the age of the women in yearsA. 34B. 24C. 25D. 20 9. The average age of a couple was 26 years at the time of marriage,the average age of the family with three children becomes 19 years.The average age of the children isA. 6 yearsB. 4 yearsC. 5 yearsD. 7 years 10. The average of 6 results is 12 .A new 7th result is included and the new average is decreased by 1 .The 7th result isA. 1B. 4C. 5D. 3 11. The average weight of 8 men is increased by 2kg,when one of the men whose weight is 50kg is replaced by a new man.The weight of the new man isA. 54 kgB. 66kgC. 63kgD. 47kg 12. The average of 5 numbers is 7.when three new numbers are added,the average of the 8 numbers is 8.5.The average of the three new numbers isA. 13B. 11C. 14D. 16 13. A bus travel from X to Y at 30km/hr but returns the same distance at 40 km/hr.The average speed of the round trip isA. 34km/hrB. 44km/hrC. 45 km/hrD. 55 km/hr 14. The average of 6 numbers is 10.If the average of the 4 of the numbers is 12 ,then the average of the remaining 2 numbers isA. 5B. 7C. 6D. 8 15. The average of prime numbers between 1 and 20 isA. 7 6/5B. 9 5/8C. 7 4/5D. 9 7/9 Related posts: Averages Quiz 1