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

Answer 1

Any Help?

Answer 2

@Diyadiya Can You Help Me?

Answer 3

x = 0.8x + 72

1x = 0.8x + 72

1x - 0.8x = 72

0.2x = 72

x = 72/0.2

x = 360