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1969 AMC 12 Question 33

AMC12 · 1969 AMC 12

Question 33

Let $S_n$ and $T_n$ be the respective sums of the first $n$ terms of two arithmetic series. If $S_n:T_n=(7n+1):(4n+27)$ for all $n,$ the ratio of the eleventh term of the first series to the eleventh term of the second series is:
  1. $4:3$
  2. $3:2$
  3. $7:4$
  4. $78:71$
  5. undetermined