Question 490159
Hey,
so for this one we need to find the sum of the depreciations of the money over the course of 5 years:
The first year, the machinery depreciates 1800, the next year 1750 and the next year 1700. First we see the pattern that every year the depreciation goes down $50. So now we need to find out the depreciation for the 4th and 5th year. The 3rd year, the depreciation is $1700. If the depreciation goes down $50. The depreciation for the 4th year is 1700-50 = 1650. The depreciation for the 5th year is 1650-50 = 1600. 
Now we know the amount of depreciation during the 5th year: $1600.
The value of the machinery at the end of the fifth year is found by subtracting the total amount of depreciation from the original cost:
50,000 - sum of depreciation = value 
We now need to find the sum of the 5 years:
1800 + 1750 + 1700 + 1650 + 1600 = 8500
So the value at the end of the fifth year is:
$50,000 - $8,500 = $41,500
I hope this helps!