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

0.2x=72
x=72/02.=360
360(0.8)=288 people 30-40yrs old

Answer 2

x=72/0.2*

Answer 3

?

Answer 4

112

288

360

432

Answer 5

just made a typo up above, the answer is still the same

Answer 6

288

Answer 7

Thanks

Answer 8

yw