A manager estimates the daily output of their factory to be: Q = 32:3 + xzy + 2/3 units, where :1: is the number of hours of skilled labor and y is the number of hours of unskilled labor. Currently, the factory is using 60 hours of skilled labor and 70 hours of unskilled labor, In order for the- manager to maintain the current level of output, unskilled labor should be _" by approximately hours to offset a one-hour increase in skilled labor, rounded to the nearest hundredth of an hour