anonymous
  • anonymous
An online service increased the price of downloading a song from $1.79 to $1.99 . To the nearest whole percent, by how much did the price rise ? PLZ HELP ME !!!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@mathstudent55 can you help me ?
jdoe0001
  • jdoe0001
hmmm how much did it increase by though? notice, 1.79 and 1.99 how much was changed in the price?
anonymous
  • anonymous
It was changed by 20 cents @jdoe0001

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anonymous
  • anonymous
@ccswims can you help me ?
jdoe0001
  • jdoe0001
right so, start price is 1.79 so we could say that 1.79 is the 100% amount so how much is 20cents of $1.79 or 179cents? well \(\large { \begin{array}{ccllll} \$&\% \\\hline\\ 179&100\\ 20&x \end{array}\implies \cfrac{179}{20}=\cfrac{100}{x}\impliedby \textit{solve for "x"} }\)
anonymous
  • anonymous
Kk now should I cross mulitply ?
ccswims
  • ccswims
yes, cross multiply
anonymous
  • anonymous
Kk I'll do that now @ccswims
anonymous
  • anonymous
I did it & I got 11.1731845
ccswims
  • ccswims
yes, now make that into a percent
jdoe0001
  • jdoe0001
yeap, and that rounded up to the nearest whole percent is, 11%
anonymous
  • anonymous
Kk thank you very much @jdoe0001 I really appreciate it

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