I would last a long time in a power outage. I’m always prepared in case there was a power outage. At home, I have candles, gallons of water, non-perishable food and a battery powered radio. I’ve been through two power outages in my lifetime and was always prepared for them.
How long a person lasts in a power outage depends on how they prepared for it beforehand. If a person or family doesn’t have candles, water and food, they won’t last long.
In 2003 (when I was living in East New York, Brooklyn) there was a power outage in the neighborhood. Luckily, my mother and I had the necessary things to get through the power outage without any problems.