The equipment in a power station costs Tk $15,60,000$ and has a salvage value of Tk

$41,000$ at the end of $25$ years. Determine the depreciated value of the equipment at the

end of $20$ years on the following methods:

$($i$)$ Straight line method;

$($ii$)$ Diminishing value method;

$($iii$)$ Sinking fund method at $5\%$ compound interest annually

Note: TK is Bangladeshi Currency