SOLUTION: Lucille has dimes and quarters totaling of $ 2.25. If the numbers of coins she has were reversed( if the number of dimes were instead the number of quarters, and vice versa), she w

Algebra ->  Customizable Word Problem Solvers  -> Coins -> SOLUTION: Lucille has dimes and quarters totaling of $ 2.25. If the numbers of coins she has were reversed( if the number of dimes were instead the number of quarters, and vice versa), she w      Log On

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Question 1105202: Lucille has dimes and quarters totaling of $ 2.25. If the numbers of coins she has were reversed( if the number of dimes were instead the number of quarters, and vice versa), she would have 30 cent less. How many of each kind of coin does she have?
Answer by josgarithmetic(39799) About Me  (Show Source):
You can put this solution on YOUR website!
system%2810d%2B25q=225%2C25d%2B10q=195%29

system%282d%2B5q=45%2C5d%2B2q=39%29

7d%2B7q=84

d%2Bq=12

Use any two equations from system system%282d%2B5q=45%2C5d%2B2q=39%2Cd%2Bq=12%29.

5d%2B2q-2d-2q=39-24
3d=15
highlight%28d=5%29------five dimes
-
highlight%28q=7%29------seven quarters