Engineering Economics
ABC Corporation makes it a policy that for any new equipment purchased, the annual depreciation cost should not exceed 20% of the first cost at any time with no salvage value. Determine the length of service life necessary if the depreciation used is the SYD method.

10 years
7 eyars
9 years
8 years

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Engineering Economics
In a cash-flow diagram:

All of these
Time 1 is considered to be the end of time period 1
A vertical arrow pointing up indicates a positive cash flow
Time 0 is considered to be the present

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