Question 1156918
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x quarters and (23-x) dimes.


Total money equation


    10*(23-x) + 25x = 470  cents

    10*23 - 10x + 25x = 470

    25x - 10x = 470 - 10*23

    15x       = 240

      x       = 240/15 = 16.


<U>ANSWER</U>.  16 quarters and the rest, 23-16 = 7 dimes.
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Solved.