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1994 AMC 12 Question 14

AMC12 · 1994 AMC 12

Question 14

Find the sum of the arithmetic series $$
20+20\frac15+20\frac25+\cdots+40.
$$
  1. $3000$
  2. $3030$
  3. $3150$
  4. $4100$
  5. $6000$