The average of 24 numbers is 65. The average of the first 11 numbers is 67 and the average of the last 10 numbers is 70. If the 12th number is 13 less than the 13th number, and the 14th number is one more than the 13th number, then the average of 12th and 14th numbers is:
1
26
2
36
3
39
4
42