Main Question is given in the image please, Find i and ii asked there. Remember to explain how answer were obtained and each value were obtained, so that i can understand.

If possible also find the optimum period of replacement

A Ld. has a machine whose purchase price is 1,00,000. Its running cost and resale price at the end of different years are as follows :- (i) Obtain the economic life of machine and the minimum average cost. (ii) The Company has obtained a contract to supply the goods produced by the machine, for a period of five years from now. After this time period, the company does not intend to use the machine. If the company has a machine of this type which is one year old, what replacement policy should it adopt if it intends to replace the machine not more than once