A coin collector has $1.70 in dimes and nickels. She has 2 more dimes than nickels. How many nickels does she have?
1 Answer
10 nickels and 12 dimes
Explanation:
Given that
1 nickel
1 dime
100 cents
So 2 nickels is 1 cent
Let the count of nickels be
Let the count of dimes be
Known that $1.70
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So
It is given that there is 2 more dimes than nickels giving:
Using equation(2) substitute for d in equation(1)
Subtract 20 from both sides
Divide both sides by 15
Thus equation (2) becomes
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