In Canada, $1 and $2 bills have been replaced by coins. When Marissa returned home from to San Francisco from a trip to Vancouver, she found that she had acquired 37 of these coins with a total value of $51 Canadian. How many each denomination did she have?

Answer 1

37 @ $1 = $37
so, there are $14 extra.

That means there were 14 $2 and 23 $1 coins.