Question

A social networking site recorded that 80% of the people who became members of the site one month were between 30 and 40 years old. The equation below represents this information, where x represents the total number of people who became members of the site that month.

x = 0.8x + 72

How many people who became members of the site that month were between 30 and 40 years of age?

Answer 1

x = 0.8x + 72
solve for x to find the total number of people that month.
then take .8% of that number to get your answer.
I'll start you off.
0.2x = 72

Answer 2

x = 360

Answer 3

because you then divide by 0.2 on both sides

Answer 4

yes.
x = 360
so
y/0.8 = 360

Answer 5

thank you so much

Answer 6

you get a medal

Answer 7

no problem :)