Answer:
60 hours
Step-by-step explanation:
If the pizza maker makes 14 pizzas per hour in average,
Assuming that s/he will keep making pizzas in this rate for the following hours, then the time s/he needs to make 840 pizza can be found by dividing 840 to the average pizza amount 14, that is :
[tex]\frac{840}{14} =60[/tex] hours.
