Kelsey Construction has purchased a crane that comes with a 5-year warranty.Repair costs are expected to average $5000 per year beginning in Year 6 when the warranty expires. Determine the present worth of the crane's repair costs over its 15-year life, assuming an interest rate of 10%. (Approach: Draw a cash flow diagram (CFD) - Find P' at Year 5, working backwards" from Year 15. Then use that P' as the new F value (as related to the P you're trying to find, at Year 0).