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This is too much. Since quarters are worth the most I must have too many quarters so refine the guess to fewer quarters and continue. A better method would be to use algebra. The two statements two more nickels than dimes and three more quarters than nickels each involve nickels so I am going to let the number of nickels be the variable. Let N be the number of nickels then the number of dimes in N  2 and the number of quarters is N + 3. Thus the amount of money Ellen has in nickels is
Find the amount of money she has in dimes and quarters and add the three quantities. The sum must be $3.35 which gives you an equation in N which you can solve. I hope this helps,  


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