engineering economy

step by step

and plese claer hand writing

5) Xeelly Malaysia expects the cost of a M70 car part to increase by $10 per year beginning 5 years from now. If the cost in year 1 to year 4 is $80: a) Determine the present worth in year of the cost through year 10 at an interest rate of 10% per year. (5 marks) b) Show and explain in brief the cashflow diagram to make you answer clear