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Fagn, If the rotio of the sum of firatn term of, is 7o ++): (4n+2t),, 9'th terms., then fnd the, two Aifs, retto of their, 2017, Sn, 04(n-1)d, 29+ (0-1)d., 4n+27, n-=(9-1), 2, 4n+27, o't d, n-t = 16, - 17, Now, at 8d, a't 8d', Ale,, ¥47)+1, 4(14) +27, a't &d', 120, 95, Ae, 24, -4, 19, 7 The fivst ferm of, AP is 5, the lest ferm, Land the sum 6f oll its term is y00, on, find the no. of terms and the, difference of the, sommon, A.P., - 2017, 9=5, Sn = 400