C. Rs.1750/-
Feedback A's Share = Rs.10000/- per first 1 year, Next year 5000/- added
= Rs.10000/- × 1 + Rs.15000/- × 1 = Rs.25000/-
B's Share = Rs.20000/- per first 1 year, Next year 5000/- reduced
= Rs.20000/- × 1 + Rs.15000/- × 1 = Rs.35000/-
C's Share = Rs.30000/- per first 1 year, Next year 10000/- reduced
= Rs.30000/- × 1 + Rs.20000/- × 1 = Rs.50000
Then,A's part = 25 : B's part = 35 : C's part = 50
===> 5 : 7 : 10
Total 22 parts -----> Rs.7700/-
2 parts ------> Rs.700/-
Then, A's share is
5 parts = Rs.350/- × 5 parts = Rs.1750/-