Consider a four-year project with the following information: initial fixed asset investment = $625,000; straight-line depreciation to zero over the four-year life; zero salvage value; price = $51; variable costs = $39; fixed costs = $300,000; quantity sold = 121,000 units; tax rate = 23 percent.

How sensitive is OCF to changes in quantity sold? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

change in OCF/ change in quantity=______