Answer: $21,880
Explanation:
First find the after tax operating income:
= (Revenues - variable costs - fixed costs - depreciation ) * ( 1 - tax rate)
= (120,000 - 72,000 - 20,000 - 10,00) * ( 1 - 34%)
= $11,880
Then add back depreciation because it is a non-cash expense:
Operating cashflow = 11,880 + 10,000
= $21,880