Average - Questions and Answers

11. The average score of a cricketer in 2 matches is 27 and that in 3 others is 32. Then his average score in 5 matches is :

12. A ship sails out to a mark at the rate of 15 km/ph and sails back at the rate of 10 kmph. The average rate of sailing is :

13. The average weight of 19 students is 15 kg. By the admission of a new student the average weight is reduced to 14.8 kg. The weight of the new student is :

14. The average of 13 results is 68. The average of first seven is 63 and that of the last seven is 70, the seventh result is :

15. In a class, there are 20 boys whose average age is decreased by 2 months, when one boy aged 18 years is replaced by a new boy. The age of the new boy is :