Final answer:
The total time required to produce a bed at Jones Furniture Company is 12 hours, summing the 8 hours of carpentry and 4 hours of varnishing.
Step-by-step explanation:
The total time required to produce a bed at Jones Furniture Company, given the bed requires 8 hours of carpentry and 4 hours of varnishing, can be calculated by summing these two values. The total production time is the carpentry time plus the varnishing time. Therefore, the total time to produce a bed is 8 hours of carpentry + 4 hours of varnishing, which equals 12 hours.