The following inventory valuation errors have been discovered for Knox Corporation: The 2015 year-end inventory was overstated by $23,000
The 2016 year-end inventory was understated by $61,000
The 2017 year-end inventory was understated by $17,000
The reported income before taxes for Knox was:
Year: Income before Taxes:
2015 $138,000
2016 $254,000
2017 $168,000
Required:
Compute what income before taxes for 2015, 2016, and 2017 should have been after correcting for the errors.

Greater concern for innovation and quality has shifted the job trend to using more broadly defined jobs. t/f

Depreciation on the company's equipment for 2017 is computed to be $18,000.the prepaid insurance account had a $6,000 debit balance at december 31, 2017, before adjusting for the costs of any expired coverage. an analysis of the company's insurance policies showed that $1,100 of unexpired insurance coverage remains.the office supplies account had a $700 debit balance on december 31, 2016; and $3,480 of office supplies were purchased during the year. the december 31, 2017, physical count showed $300 of supplies available.two-thirds of the work related to $15,000 of cash received in advance was performed this period.the prepaid insurance account had a $6,800 debit balance at december 31, 2017, before adjusting for the costs of any expired coverage. an analysis of insurance policies showed that $5,800 of coverage had expired.wage expenses of $3,200 have been incurred but are not paid as of december 31, 2017.

Salt corporation's contribution margin ratio is 78% and its fixed monthly expenses are $30,000. assume that the company's sales for may are expected to be $89,000. required: estimate the company's net operating income for may, assuming that the fixed monthly expenses do not change.