exam on average part 2

1. The average monthly salary of the workers in a workshop is Rs.8,500. If the average monthly salary of 7 technicians is Rs. 10,000 and average monthly salary of the rest is Rs. 7,800, the total number of workers in the workshop is:

2. A person divides his total route of journey into three equal parts and decides to travel the three parts with speeds of 20,15 and 12km/hr. respectively. Find his average speed during the whole journey :

3. The average age of Australian cricket team of 11 players playing the Delhi test is 30 years. The average age of 5 of the players is 28 years and that of another set of 5 players, totally different from first five is 29.5. If it is the wicketkeeper who was not included in either of these two groups, then find the age of the wicketkeeper years :

4. 19 person want to a hotel for a combined dinner party. 13 of them spent Rs.79 each on their dinner and rest spent Rs. 4 morethan the average expenditure of all the 19. What was the total money spent by them(approx):

5. A certain number of trucks were required to transport 60 tons of steel wire from FLET factory in Raigarh. However, it was found that since each truck cargo could take 0.5 tons less, another 4 trucks were needed. How many trucks were initially planned to be used?

6. The average weight of a group of 20 boys was calculated to be 89.4 kg and it was later discovered that one weight was misread as 78 kg instead of 87 kg. The correct average weight is :

7. While finding the average of 10 given numbers, a student, by mistake, wrote 64 in place of a number 46 and got his correct average 50. The correct average of the given numbers is :

8. The average of three numbers is 135. The largest number is 195 and the difference between the other two is 20. The smallest number is :

9. The average of six numbers is 32. If each of the first three numbers is decreased by 4 and last three numbers are increased by 2, then the new average is: (a) 35 (b) 34 (c) 31 (d) 30

10. Out of four numbers, the average of the first three is 18 and that of the last three is 16. If the last number is 19, the first is:

11. The average of 5 consecutive integers starting with ‘m’ is n. What is the average of 6 consecutive integers starting with (m + 2) ?

12. The average age of 4 football player is 33 years. A new player added in their group now new average becomes 33 year 6 months. After that a footbller in their group after which average age become 33 year 9 months. Find the average age of two new player.

13. The average weight of 8 persons is increased by 2.5kg when one of them who weights 56 kg is replaced by a new man. The weight of new man is :

14. 5 year ago, the average age of Rashmi and surbhi was 20 year. Now the average age of Rashmi, Surbhi and Geeta is 30 year. What will be age of Geeta after 15 years ?

15. A cricketer whose bowling average is 11.125 runs per wicket takes 7 wickets for 38.5 runs and thereby decrease his average by 1.25. The number of wickets taken by him till last match was :

16. The average monthly salary of 660 workers in a factory is Rs.880(approx). The average monthly salary of officers is Rs.2100 and average monthly salary of the other workers is 840. The number of other worker is:

17. After replacing old member by a new member, it was found that the average age of five member of a club is the same as it was 8 years ago. What is the difference between the ages of the replaced and the new member?

18. The average weight of Ajay, Brijesh and Chandan is 84 kg. Another man digvijay join the group and the average now becomes 80 kg. If another man Imran, whose weight is 3 kg more than that of Digvijay, replace Ajay, then the average weight of Brijesh, Chandan, Digvijay and Imran becomes 79 kg. The weight Ajay is:

19. A person runs the first 1\4th of the distance at 8 km/hr, the next th 5 \3 at the 6 km/hr and the remaining distance at 10km/hr. Find his average speed : if total destance is 200 km.

20. 30 oranges and 70 apples were pruchased for Rs. 510. If the price per apple was Rs.3, the average price of 35 orange and 15 apple will be:

21. The average per day income of A, B and C is Rs. 450. If the average per day income of A and B be Rs.400 and that of B and C be Rs.430, the per day income of B is :

22. The average marks of 32 boys of section A of class X is 60 where as the average marks of 40 boys of section B of class X is 33. The average marks forboth the sections combined together is

23. In an exam, the average marks obtained by the students was found to be 60. After omission of computational errors, the average marks of some 100 candidates had to be changed from 60 to 30 and the average with respect to all the examines came down to 45 marks. The total number of candidates who took the exam, was:

24. The average pocket money of 3 friends A, B, C is Rs.80 in a particular month. If B spends double and C spends triple of what A spends during that month and if the average of their unspent pocket money is Rs. 60, then A spends (in Rs.) (a) 10 (b) 20 (c) 30 (d) 40 87.

25. The average of n numbers is 32. If three-fourth of the numbers are increased by 4 and the remaining are decreased by 6, what is the new average?