average amount of sleep\nlast year, the oldest person averaged 2 more hours of sleep each night. how many…

average amount of sleep\nlast year, the oldest person averaged 2 more hours of sleep each night. how many hours of sleep did the oldest person average each night last year?\nhours
Answer
Explanation:
Step1: Identify current sleep - hours
The oldest person in the graph is 20 years old and currently averages 7 hours of sleep.
Step2: Calculate last - year's sleep - hours
Add 2 hours to the current average. So, (7 + 2=9).
Answer:
9