Question 676578
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Hi
David emptied his pockets and found that he had 30 coins worth $4.80. 
He only had {{{highlight(x)}}}quarters and {{{highlight(30-x)}}}dimes.
CENTS makes sense
 25x + 10(30-x) = 480¢ 
      15x = 180
        x = 12, the number of Quarters.  18 Dimes