SOLUTION: Mia has 30nickels and dimes. She has 12 more nickels than dimes. How many dimes does Mia have?

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Question 1104930: Mia has 30nickels and dimes. She has 12 more nickels than dimes. How many dimes does Mia have?
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
let d be the number of dimes
:
(d+12) + d = 30
:
2d + 12 = 30
:
2d = 18
:
d = 9
:
Mia has 9 dimes
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