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anonymous
 one year ago
You have a jar of pennies and quarters. You wan’t to chose 15 coins hat are worth exactly $4.35 . How many pennies and how many quarters will you choose?
p=pennies
q=quarters
I believe elimination would be best for this problem. I did not end up rounding any of the answers, instead I multiplied the first equation by 1 and the second equation by 100.
p(1) + q(1) = 15(1) .01p(100) + .25q(100) = 4.35(100)
p  q = 15 p + 25 = 435
p  q = 15
p + 25 = 435
24q = 420
q = 17.5
p + (17.5) = 15
p = 2.5
i keep getting negative answers
anonymous
 one year ago
You have a jar of pennies and quarters. You wan’t to chose 15 coins hat are worth exactly $4.35 . How many pennies and how many quarters will you choose? p=pennies q=quarters I believe elimination would be best for this problem. I did not end up rounding any of the answers, instead I multiplied the first equation by 1 and the second equation by 100. p(1) + q(1) = 15(1) .01p(100) + .25q(100) = 4.35(100) p  q = 15 p + 25 = 435 p  q = 15 p + 25 = 435 24q = 420 q = 17.5 p + (17.5) = 15 p = 2.5 i keep getting negative answers

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0I'm getting the same results. So it's not possible to have 15 coins that are either pennies or quarters and have the total value be $4.35
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