Heat integration is planned in a process plant at an investment Rs. 2x10$^{6}$. This would result in a net energy savings of 20 GJ per year. If the nominal rate of interest is 15% and the plant life is 3years, then the breakeven cost of energy, in Rs. per GJ (adjusted to the nearest hundred), is
- 33500
- 43800
- 54200
- 65400