Question

The Pew Internet and American Life Project finds that 95% of teenagers (12–17) use the Internet and that 81% of online teens use some kind of social media. Of online teens who use some kind of social media, 91% have posted a photo of themselves. STATE: What percent of all teens are online, use social media, and have posted a photo of themselves?

Answer 1

The percent of all teens are online, use social media, and have posted a photo of themselves 70% (approx)

Explanation:

Answer 2

The percent of all teens are online, use social media, and have posted a photo of themselves are:

70% (approx)

Explanation:

It is given that:

95% of teenagers use the Internet this means that the teens are online.

This means that 95%=0.95.

and 81% of online teens use some kind of social media.

i.e. 81%=0.81

and Of online teens who use some kind of social media, 91% have posted a photo of themselves.

i.e. 91%=0.91

Now we are asked to find the percent of teens who are online, use social media, and have posted a photo of themselves

i.e. The percent is: (0.95×0.81×0.91)×100

= 70.0245%

which is approximately equal to 70%