Question 212197
$13.50  *(2/9) = $3,,$3/.50 = 6 coins
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Remaining,,,13.50 -3 =10.50
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$ 10.50 * (4/7) = $6,,$6/.25 = 24  coins
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Remaining,13.5 -3 -6 = $ 4.50
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$4.50 = x(.05) +x(.10) = x(.15),,,,x=30
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That  is  30 coins  nickels  and  30  coins dimes
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Total  coins  is  ( 6+24+30+30) = 90  coins
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check 6 * .50 = $3,,,,24* .25 = $6,,,30*.05 =$1.50,,,30*.10=$3.00
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(3+6+1.50+3) = $ 13.50,,,ok




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