Faman39
  • Faman39
Kenny goes shopping for school clothes during a tax−free weekend, and he saves 6% sales tax. Use a percent proportion to determine how much he would have to spend to save 30% . Which of the following is true? The solution is $18 , and is a denominator in the proportion. The solution is $18, and is a numerator in the proportion. The solution is $500, and is a denominator in the proportion. The solution is $500, and is a numerator in the proportion.
Mathematics
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SOLVED
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chestercat
  • chestercat
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ganeshie8
  • ganeshie8
according to the question, we must setup a proportion like this : \(\frac{a}{b} = \frac{c}{d}\)
ganeshie8
  • ganeshie8
since he save 6 rupees on every 100 rupees he spends, first ratio will be 6/100 \(\frac{6}{100} = \frac{c}{d}\)
ganeshie8
  • ganeshie8
call : x, the amount he will have to spend

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ganeshie8
  • ganeshie8
to save 30 dollars, the proportion becomes : \(\frac{6}{100} = \frac{30}{x}\)
ganeshie8
  • ganeshie8
solving gives, x = 500, and it is in the numerator.....
ganeshie8
  • ganeshie8
and i see theres a mistake in the question : its not 30%, it should be 30 $.
Faman39
  • Faman39
Thank u so much @ganeshie8 !!!!!!!!!!!!!!!!!!!!!!!!!!! :)
ganeshie8
  • ganeshie8
yw... :))
Faman39
  • Faman39
Yeah, sorry it ws my mistake :)
Faman39
  • Faman39
i m sorry about that
ganeshie8
  • ganeshie8
lol okay... its easy to make out so no probs... :D
Faman39
  • Faman39
your awesome @ganeshie8 !!!!!!!!!! :)
rsadhvika
  • rsadhvika
minor correction @ganeshie8 . x is 500 and it was in the denominator
ganeshie8
  • ganeshie8
oops! you're right.... good catch @rsadhvika thank you :)

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