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xokatexo
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1. Vicki has $2.80 in quarters and dimes. The number of dimes is 7 less than the number of quarters. Find the number she has of each kind.
2. A purse containing $3.20 in quarters and dimes has, in all, 20 coins. Find the number of each kind of coin.
 2 years ago
 2 years ago
xokatexo Group Title
1. Vicki has $2.80 in quarters and dimes. The number of dimes is 7 less than the number of quarters. Find the number she has of each kind. 2. A purse containing $3.20 in quarters and dimes has, in all, 20 coins. Find the number of each kind of coin.
 2 years ago
 2 years ago

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xokatexo Group TitleBest ResponseYou've already chosen the best response.0
can you show the substitution work?
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
dw:1348685007820:dw try to solve for Q from here :)
 2 years ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
thats not right....
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
hmm lets see
 2 years ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
Q(Q7)=2.80 2Q7Q=2.80 5Q=2.80   5 5 Q=.56
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
woops don't get confused by my brackets :C Q+(Q7) = Q+Q7
 2 years ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
wait what?
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
oh woops i messed up from the start T.T oh goodness. im sorry bout that.. need to fix that..
 2 years ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
The two equations are as follows: 25Q + 10d = 280 d = Q  7
 2 years ago

zepdrix Group TitleBest ResponseYou've already chosen the best response.0
yah what kropot said, sorry bout that :C
 2 years ago

xokatexo Group TitleBest ResponseYou've already chosen the best response.0
k got it THANKS @kropot72
 2 years ago

kropot72 Group TitleBest ResponseYou've already chosen the best response.1
You're welcome :)
 2 years ago
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