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candeebabee
 3 years ago
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?
candeebabee
 3 years ago
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?

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ChmE
 3 years ago
Best ResponseYou've already chosen the best response.0was that equation given to you. it seems wrong.

candeebabee
 3 years ago
Best ResponseYou've already chosen the best response.0Thats what the question said

ChmE
 3 years ago
Best ResponseYou've already chosen the best response.0where did 72 come from? The people between 30 and 40 would be .80 times the total.

ChmE
 3 years ago
Best ResponseYou've already chosen the best response.0ok. Let's solve the equation for x. So we are solving for the total of people who joined.

candeebabee
 3 years ago
Best ResponseYou've already chosen the best response.0okay, i am so confused haha

ChmE
 3 years ago
Best ResponseYou've already chosen the best response.0x = 0.8x + 72 x  .8x = .8x + 72  .8x .2x = 72 Divide both sides by .2 x = 360 Now that we know the total we can multiply this by 80% of .8 to get ppl between 3040

candeebabee
 3 years ago
Best ResponseYou've already chosen the best response.0thank you so much!(;
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