Ques 12- The following age wise chart of 300 passengers flying from Delhi to Pune is prepared by the Airlines staff.
| Age | Less than 10 | Less than 20 | Less than 30 | Less than 40 | Less than 50 | Less than 60 | Less than 70 | Less than 80 |
| Number of passengers | 14 | 44 | 82 | 134 | 184 | 245 | 287 | 300 |
Find the mean age of the passengers.
Solution :
