12th year corpus (Rs) Corpus @6% p.a for next 3 years Rs 25,000 p.m for next 3 years @ 6% Amount at the end of 15th year Shortfall
80 lakh (@12%)9,528,128983,40310,511,531Nil
70 lakh (@10%)8,337,112983,4039,320,515-7%
60 lakh (@8%)7,146,096983,4038,129,499-19%