workers decided to raise Rs.3 lacs by equal contribution from each. Had they contributed Rs.50 eachextra, the contribution would have been Rs.3.15 lacs . How many workers were they? Choose the correct option:
A) 300
B) 230
C) 500
D) 560
E) 590
N * 50 = (315000 - 300000)= 
<gadget id="calculator">(315000 - 300000)</gadget>
<output>15_000</output>
15000   N= 15000 / 50= 
<gadget id="calculator">15000 / 50</gadget>
<output>300</output>
300   300
<result>A</result>
workers decided to raise Rs.3 lacs by equal contribution from each. Had they contributed Rs.50 eachextra, the contribution would have been Rs.3.15 lacs . How many workers were they?