Trying to calculate the IRR given changes in period duration or day count basis. If someone could help me understand the top line, I can relay the formula down.

Thanks

Cash Flow per Period:

	Period 0	Period 1	Period 2	Period 3	Period 4	Period 5	Period 6	Period 7	Period 8	Period 9
Investor 1	($350)	$35	$44	$45	$7	$40	$109	$53	$60	$46
Investor 2	($750)	$83	$104	$106	$17	$94	$253	$123	$140	$107

IRR Value: (Needed!)

INVESTOR IRR (PER SCENARIO)
Scenario	1	2	3	4	5
Period Duration	365 Days	180 Days	90 Days	30 Days	10 Days
Annual Day Count Basis	Actual/365	Actual/365	Actual/360	Actual/360	Actual/365
Investor 1	4.33%
Investor 2	6.14%