Question 465625
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Hi,
Let x and (35-x) represent the number of dimes and nickels respectively
Question states***CENTS makes sense
 10x + 5(35-x) = 330
Solving for x
        5x = 155
         x = 31, the number of dimes.  4 nickels.  (35-31)
CHECKING our Answer***
 10*31 + 5*4 = 310 + 20 = 330cents or $3.30