Help!!! both questions

Rob's Tennis Balls purchased new equipment costing $600,000. Rob expects the new equipment to generate cash savings as follows: Year Cash Savings 1 $150,000 $200,000 3 $250,000 4 $250,000 2 What is the payback period? O 1 year 3 years O 4 years 2 years Question 38 4.2 pts Ribelin Corporation is adding a new product line that will require an investment of $138,000. The product line is estimated to generate cash inflows of $25,000 the first year, $23,000 the second year, and $18,000 each year thereafter for ten more years. What is the payback period? 7.26 years 5.52 years 7.00 years 7.67 years