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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.
 one year ago
 one year ago
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.
 one year ago
 one year ago

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xokatexoBest ResponseYou've already chosen the best response.0
can you show the substitution work?
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
dw:1348685007820:dw try to solve for Q from here :)
 one year ago

xokatexoBest ResponseYou've already chosen the best response.0
Q(Q7)=2.80 2Q7Q=2.80 5Q=2.80   5 5 Q=.56
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
woops don't get confused by my brackets :C Q+(Q7) = Q+Q7
 one year ago

zepdrixBest 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..
 one year ago

kropot72Best ResponseYou've already chosen the best response.1
The two equations are as follows: 25Q + 10d = 280 d = Q  7
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
yah what kropot said, sorry bout that :C
 one year ago

xokatexoBest ResponseYou've already chosen the best response.0
k got it THANKS @kropot72
 one year ago
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