An engineering alumni of Jamia Millia Islamia wishes to donate to scholarship fund of the faculty of Engineering and Technology. The following three options are available:
Plan 1 ₹15,00,000 now.
Plan 2 ₹3,75,000 per year for 10 years beginning 1 year from now.
Plan 3 ₹12,50,000 five years from now and another ₹20,00,000 five years from now.
The Dean of the faculty wants to select the plan that maximizes the buying power of the rupees received. If the donation earns a real interest rate of 10\% per year and the inflation rate is expected to average 5\% per year, which plan should be accepted? Evaluate the plans by taking into account the inflation.