workers decided to raise Rs.3 lacs by equal contribution from each. Had they contributed Rs.50 eachextra, the contribution would have been Rs.3.25 lacs . How many workers were they? Choose the correct option:  A) 350  B) 400  C) 500  D) 550  E) 590

Rationale: "n * 50 = ( 325000 - 300000 ) = 25000 n = 25000 / 50 = 500 c"
Answer: C