Chemical Engineering Plant Economics
According to six-tenths-factor rule, if the cost of a given unit at one capacity is known, then the cost of similar unit with '' times the capacity of the first unit is approximately equal to __________ times the cost of the initial unit.

N0.4
N0.6
N
√n

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Chemical Engineering Plant Economics
Pick out the correct statement.

Scrap value is the net amount of money obtainable from the sale of used property over and above any charges involved in its removal & sale
Sum-of-the-years-digits methods of depreciation calculation accounts for the interest on the investment
Unamortised cost is the difference between the original cost of a property and all the depreciation charges made to dat
Difference between income and expense is termed as gross revenue

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