algebra/math
posted by
shhtacy
.
Rico's collection of quaters and dimes contains $32.85. There are 171 coins in all How many quarters and how many dimes are in Rico's collection?
i solve these with 2 equation.
would they be:
q + d = 171
25q + 10d = 32.85
help me please.

algebra/math 
drwls
The second equation should be
25q + 10d = 3285, becasue it refers to the number of cents, not dollars
If you substitute 171  d for q in the second equation, you can solve for d.

algebra/math 
shhtacy
105 quarters
66 dimes
is that right?