Question 422320
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Hi
there were seven fewer quarters than nickels
Let x and (x-7)represent the number of nickels and quarters respectively
Question states*** Using CENTS
 5x + 25(x-7) = 215

Solving
   30x = 390
     x = 13, nickels and 6 Quarters

CHECKING our Answer*** 
   5*13 + 25*6 = 215 or $2.15