SOLUTION: Melissa has 18 nickels and 22 dimes. Now suppose she spends 8 of her coins. She spends 4 more nickels than dimes. What is the value of the coins that she has left?
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Question 978555: Melissa has 18 nickels and 22 dimes. Now suppose she spends 8 of her coins. She spends 4 more nickels than dimes. What is the value of the coins that she has left?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = the number of dimes she spends
Let = the number of nickels she spends
(1)
(2)
-----------------
(2)
Add (1) and (2)
and
(1)
(1)
(1)
-----------------
She has left:
nickels
dimes
------------------
The value of what she has left is:
cents in nickels
-----------------------------
cents in dimes
-----------------------------
She has $2.60 left
-----------------
check the answer:
She spent
cents spent
-----------------
She started with $3.10
She started with $3.10
OK
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