Problem $1$:

A company is considering whether to purchase a new machine. Machines A and $B$ are available for Rs$.80,000$ each. Consider the depreciation, no salvage value after $5$ years Earnings after taxation are as follows:

$\backslash$table$[[$Year$,$Machine A$,$Machine B$],[,$Rs$.,$Rs$.],[1,24,000,8,000],[2,32,000,24,000],[3,40,000,32,000],[4,24,000,48,000],[5,16,000,32,000]]$

Required: Evaluate the two alternatives using the following: $($a$)$ payback method, $($b$)$ rate of return on investment method, and $($c$)$ net present value method. You should use a discount rate of $10\%.$