HELP! Management Accounting- Level 3 Apportionment of overheads table

I have been trying to figure out the below question for some time however I am really struggling!
Please could someone help with how the cutting and assembly section for the Depreciation charge has been calculated?


Please could someone help with how the cutting and assembly section for the Depreciation charge has been calculated?


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For the depreciation it's done as a percentage of value as you'll have a higher depreciation charge on a higher net value.
So 100,000+40,000 = 140,000 total
Cutting = 100,000/140,000 *4200 = 3000
Assembly = 40,000/140,000 * 4200 = 1200
This method continues for the other catagories by using the relevant figures, e.g power use for the power cost allocation.
ACCA in progress
F4- Passed Aug 2020
F5- Planned for Dec 2020
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ACCA in progress
F4- Passed Aug 2020
F5- Planned for Dec 2020
F6- Passed Sep 2020
F7
F8
F9