Question

A store recorded that 20% of the people who came to the store for one moth were between the age of 60-70. The equation below represents this information, where x represents the total number of people who came to the store that month. How many people came to the store that month that were between the age of 60-70

x = 0.2x + 360

can you show the steps as well I need it for the question.

Answer 1

solve for x first:
x = 0.2x + 360
0.8x = 360
x = 450

If x is the total number of customers, 20% => 0.2x = 90.