Question

A study of children 15 to 18 years of age in the United States considered the availability of various
types of media in the child’s bedroom. It was found that 68% have a television, 92% have a CD/tape
player, and 32% have a computer in their bedroom. Only 4% do not have a television, a CD/tape
player, or a computer. Nine percent have a computer and a CD/tape player but no television. Fortyfour
percent have a television and a CD/tape player but no computer, and 1% have a television and
a computer but no CD/tape player. A U.S. child, aged 15 to 18,

Answer 1

any help will be appreciated i don't need you gimme the answer just help me resolve this
thank you !

Answer 2

You add up all areas. "22-x" is stated that way because "1" and "9" are part of the "32", so you have to subtract out the 1 and 9, just like you are subtracting out the x in 22-x.

Similar for 39-x and 23-x. Don't forget to add "4" and "x". It all adds up to 100. Solve for "x". Do you need further help?

Answer 3

thank you ! i was stuck in that part

Answer 4

It's a fun problem. Well, as much as these are fun! Good luck to you in all of your studies , you are welcome, and thx for the recognition! @yoyojonathan

Answer 5

In case you get a little lost, you can always ask me for more help. I'll stick a round for a little while. Remember that when you are adding up all the areas, there are 8you ad that includes the "x" and the "4". When you get "x", it is good to resolve the 22-x, the 39-x, and the 23-x (and the x middle) with what x actually is and add up again and look closer at what the "intersection" numbers are. It will shed light on this and consolidate your understanding.

These types of problems are best done this way with diagrams. It can also be done with a huge linear system, but no one does it that way. That way is definitely the VEERY LONG way and is not even suggested by anyone as a method. But a computer would be programmed that way to solve.

Answer 6

well actually i'm solving the problem using ven diagrams interception / unions I just need to apply the distribute laws, i should had mention his is probability class :p

Answer 7

This is a probability class :P

Answer 8

ok. Where I wrote "22 - x", you could even better write that as "32 - (1 + 9 + x)". That way it drives home the point of subtracting out areas. Similar for the other 2 intersections. But I think you have a pretty good handle on this now.

I re-wrote that because I had 23 instead of 32.

Answer 9

"23 - x" is "68 - (44 + 1 + x)"

"39 - x" is "92 - (44 + 9 + x)"

Answer 10

I worked the problem out to its conclusion and you do get a valid value for "x", so you can trust the setup work.

Nice working with you!

Answer 11

THANK YOU !

Answer 12

I'm getting weird number for x will you mind helping me out with the value of x