Answer:
Explanation:
originally allocated depreciation amount = 24000 / 8 = $ 3000
for 2 years the depreciation charged = $ 6000
The depreciation amount that should be allocated now = 24000 / 6 = $ 4000
that means for 2 years ; depreciation charged must be = $ 8000
So, depreciation is undercharged by $ 2000 ( 8000 - 6000 )
So, the cumulative effect on prior years because of the change in the estimated useful life of the machine = 2000 * 0.06 = $ 1200