Question 1175711
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F = # of five-peso coins

22-F = # of one-peso coins


Total money equation


    5F + (22-F) = 50

      4F        = 50-22 = 28

       F                = 28/4 = 7.


<U>ANSWER</U>.  7 five-peso coins, and the rest  (22-7) = 15 are one-peso coins.
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Solved.