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?

112

288

360

432
@Mel98 @tester97 @bibby @adrynicoleb @smexygirl97

Answer 1

is it 360?

Answer 2

288

Answer 3

im pretty sure

Answer 4

how'd u work it?

Answer 5

subtract 0.8x from both sides to get x by itself:
0.2x = 72

divide both sides by 0.2

x = 360

Answer 6

Thats the basic version of it...