A company purchased an industrial fork-lift for $75,000 in year 0. The company expects to use it for the next 7 years after which it plans to sell it for $10,000. The estimated gross income and expenses excluding depreciation for the first year are given below. The fork-lift will be depreciated according to a 5-year MACRS.:Determine the average tax rate applicable in the first year of operation, using the current corporate tax rate schedule.

A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. 
An 'information system' means a discrete set of information resources organized for the collection, processing, maintenance, use, sharing, dissemination, or disposition of information.

Engineering economics, previously known as engineering economy, is a subset of economics concerned with the use and "...application of economic principles" in the analysis of engineering decisions.