Question 1012507
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Q=quarters; N=$1 coins; T=$2 coins
T=N-2
Q=2N
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$0.25(2N)+$1N+$2(N-2)=$24
$0.50N+$1N+$2N-$4=$24
$3.50N=$28
N=8
ANSWER 1: She has eight $1 coins.
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T=N-2=8-2=6
ANSWER 2: She has six $2 coins.
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Q=2N=2(8)=16
ANSWER 3: She has 16 quarters.
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CHECK:
$0.25Q+$1N+$2T=$24
$0.25(16)+$1(8)+$2(6)=$24
$4+$8+$12=$24
$24=$24