In december, textra motors produced 16,600 customized suvs at its plant in new mexico. the labor productivity at this plant is known to have been 0.18 suv per labor-hour during that moth. 540 laborers were employed at the plant that month. how many hours did the average laborer approximately work that month? [ select ] if productivity can be increased to 0.21 suvs per hour, how many hours would the average laborer work that month? select]