Final answer:
Juana sold an average of 12 hot chocolates per hour during her 7-hour work shift (excluding her lunch break).
Step-by-step explanation:
The question asks us to calculate the average hot chocolate sold per hour by Juana during her shift. Juana worked an 8-hour day but took a 1-hour lunch break, leaving 7 hours of work time.
To find the average sold per hour, the total amount sold (84 hot chocolates) should be divided by the number of hours worked (7 hours). The calculation is as follows:
84 hot chocolates ÷ 7 hours = 12 hot chocolates per hour
Therefore, Juana sold an average of 12 hot chocolates per hour during her shift.