Answer:
B. 20.0% and 35.0%
Step-by-step explanation:
Jett Co.'s Average tax rates for 2015 = Income taxes paid / Taxable income
When, Taxable Income = Sales - Cost of goods sold - Operating expenses
= $1,200 - $850 - $200
= $150
Hence, Jett Co.'s Average tax rates for 2015 = $30 / $150
= 20%
Jett Co.'s Average tax rates for 2014 = Income taxes paid / Taxable income
When Taxable Income = Sales - Cost of goods sold - Operating expenses
= $1,000 - $700 - $200
= $100
Hence, Jett Co.'s Average tax rates for 2014 = $35 / $100
= 35%