SOLUTION: Martin has a total of 19 nickels and dimes worth $ 1.65. How many of each type of coin does he have?

Question 1146942: Martin has a total of 19 nickels and dimes worth $ 1.65. How many of each type of coin does he have?
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.

     n +   d =  19            (1)
    5n + 10d = 165   cents    (2)



     n +   d =  19            (1')
     n +  2d =  33            (2')


Subtract equation (1') from (2').


           d = 33 - 19 = 14.


ANSWER.  14 dimes and 19-14 = 5 nickels.

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