Given below is a series in terms of variables 'a', 'b', 'c', and 'd'.
(16a + 6c), (30c - 8a), (30d - 1.2c), (20c + 4b), 24.5b, (50a + 2d)
'a', 'd', 'b', and 'c' are in ascending arithmetic progression such that the 'b' is twice of 'a' while 'c' is 25% more than 'b'. If last term of the given series is 212, then 208 is ___th term of the series, and the difference between the 1st term and the last term of the given series is ____.
Which of the following option will fill in the blanks in the same order as it is given to make the statement correct?
1
7 and 72
2
7 and 88
3
8 and 72
4
8 and 88
5
9 and 72