Question 1143431
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N nickels and 9N dimes.


The "value" equation is


    10*(9N) - 5N = 595   cents.


    90N - 5N = 595

    85N = 595

    N   = {{{595/85}}} = 7.


<U>ANSWER</U>.  7 nickels and 9*7 = 63 dimes.


<U>CHECK</U>.   63*10 - 7*5 = 595 cents = $5.95.    ! Correct !
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