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

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

anonymous · Answer

$$x = 0.8x + 721x = 0.8x+ 721x - 0.8x = 720.2x = 72x = 72/0.2x = 360 $$

anonymous · Answer

= 360*

anonymous · Answer

Do you need an explanation or you got it?