11. 13 sheeps and 9 pigs were bought for Rs. 1291.85. If the average price of a sheep be Rs. 74. What is the average price of a pig?

12. A batsman in his 18th innings makes a score of 150 runs and there by increasing his Average by 6. Find his average after 18th innings?

13. Find the H.C.F of 777 and 1147?

14. The L.C.M of two numbers is 2310 and their H.C.F is 30. If one number is 210, the other number is?

15. The average of 50 numbers is 38. If two numbers namely 45 and 55 are discarded, The average of remaining numbers is?

16. Divide 50 in two parts so that the sum of reciprocals is (1/12), the numbers are?

17. Five years ago the average age of a family of 3 members was 27 years. A child has Been born, due to which the average age of the family is 25 years today. What is the Present age of the child?