Answer:
520 pizzas
Explanation:
1 year = 52 weeks
Meaning the number of Fridays in a week = 52 Fridays
We are told that: The Hoffman family has bought one pizza on Friday night every week for the last 10 years.
Hence, the number of pizzas they bought in 1 year
= 52 Friday × 1 pizza
= 52 pizzas
For the last 10 years
= 52 pizzas × 10
= 520 pizzas
Hence, they have bought 520 pizzas in the last 10 years