Please use formulas to solve in excel

Problem 2 If energy usage guidelines expect future increases in deep freeze efficiency, which one of two energy efficiency improvements is more economical based on future worth at an interest rate of 10% per year? A 20% increase is expected to add $150 to the current price of a freezer, while a 35% increase will add $340 to the price. The estimated cost for energy is $115 per year with the 20% increase in efficiency and $80 per year with the 35% increase. Assume a 15-year life for the 20% increase and a 10-year life for the 35% increase. (Use Excel to solve this problem) Problem 2 If energy usage guidelines expect future increases in deep freeze efficiency, which one of two energy efficiency improvements is more economical based on future worth at an interest rate of 10% per year? A 20% increase is expected to add $150 to the current price of a freezer, while a 35% increase will add $340 to the price. The estimated cost for energy is $115 per year with the 20% increase in efficiency and $80 per year with the 35% increase. Assume a 15-year life for the 20% increase and a 10-year life for the 35% increase. (Use Excel to solve this problem)