A total of 4500 people in the city bnupht takeout pizza at l

A total of 4500 people in the city bnup.ht takeout pizza at least once during the week. This was of all the people who live in the city. How many people live in the city?

A total of 4500 people in the city bought take out pizza at least once during the week. These 4500 people are 30 % of the population of the city. Hence the number of people in the city is 4500/(0.30) =15000.