Question 1150140
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     x +  y = 25      (1)    (counting coins)

    5x + 1y = 53      (2)    (counting money)



Subtract equation (1) from equation (2) and solve for x


     4x     = 53 - 25 = 28

      x               = 28/4 = 7.


<U>ANSWER</U>.  7 5-peso coins and the rest, 25-7 = 18 1-peso coins.


<U>CHECK</U>.   7*5 + 18*1 = 35 + 18 = 53 Php.    ! Precisely correct !
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Solved.