Question

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Question 1 (Worth 1 points)

(02.01)

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

x-0.8x=72=0.2x

x=72/0.2

0.8*72/0.2=288