Proposals A and B each cost $500,00 and have 5-year lives. Proposal A is expected to provide equal annual net cash flows of $109,000, while the net cash flows for proposal B are as follows:

Year 1 $150,000

Year 2 140,000

Year 3 110,000

Year 4 50,000

Year 5 50,000

$500,000 Determine the cash pay back period for each proposal.