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National Laboratory developed a special alloy material used in solar cells. The new material is expected to have a 7 years li
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Answer #1

The correct equation and payback period is the one below.

0 = -950,000 + [450,000 (P/A, 6%, np - 2) +50,000(PG, 6%, np - 2)) (PF, 1%, 2) np = 4.43 years

The equation should have years (np-2) because it is starting from the 3rd year. 7-2 = 3

A 2 1 year 0 1 B CF PVIF @6% PV Cumulative PV -950000 1.0000 -950000.00 -950000.00 0.9434) 0.00 -950000.00 0.8900 0.00 -95000

1 year 20 -950000 31 PVIF @6% =1/1.06^A2 =1/1.06^A3 =1/1.06^A4 =1/1.06^A5 =1/1.06^A6 450000 =B5+50000 =B6+50000 =B7+50000 =B8

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