Posting again because my original one is wrong! pls help me out

Most Company has an opportunity to invest in one of two new projects. Project Y requires a $300,000 investment for new machinery with a four-year life and no salvage value. Project Z requires a $300,000 investment for new machinery with a three-year life and no salvage value. The two projects yield the following predicted annual results. The company uses straight-line depreciation, and cash flows occur evenly throughout each year. (PV of $1, FV of $1, PVA of $1, and FVA of $1) (Use appropriate factor(s) from the tables provided.)

	Project Y				Project Z
Sales		$	385,000			$	308,000
Expenses
Direct materials			53,900				38,500
Direct labor			77,000				46,200
Overhead including depreciation			138,600				138,600
Selling and administrative expenses			28,000				27,000
Total expenses			297,500				250,300
Pretax income			87,500				57,700
Income taxes (38%)			33,250				21,926
Net income		$	54,250			$	35,774

1. Compute each projects annual expected net cash flows.

	Project Y	Project Z

2. Determine each projects payback period.

Payback Period
	Choose Numerator:	/	Choose Denominator:	=	Payback Period
	Cost of investment	/	Annual net cash flow	=	Payback period
Project Y	$300,000	/		=	2.00	years
Project Z	$300,000	/		=	1.50	years

3. Compute each projects accounting rate of return.

Accounting Rate of Return
	Choose Numerator:	/	Choose Denominator:	=	Accounting Rate of Return
		/		=	Accounting rate of return
Project Y					0
Project Z					0

4. Determine each projects net present value using 8% as the discount rate. Assume that cash flows occur at each year-end. (Round your intermediate calculations.)

Project Y
Chart values are based on:
n =
i =
Select Chart	Amount	x	PV Factor	=	Present Value
				=	$0
Net present value
Project Z
Chart values are based on:
n =
i =
Select Chart	Amount	x	PV Factor	=	Present Value
				=	$0
Net present value