Asked by EddieG
                .  Rachel has 15 coins with a value of $2.85.  If the coins are either dimes or quarters, how many of each coin does she have?  Write and solve using a system of equations.
            
            
        Answers
                    Answered by
            Chelle
            
    d = dimes
q = quarters
Equations:
10d + 25q = 285
d + q = 15
Solve by substitution or elimination
Substitution:
10d + 25q = 285
d = 15 - q
Elimination:
10d + 25q = 285
-10(d + q) = -10(15)
    
q = quarters
Equations:
10d + 25q = 285
d + q = 15
Solve by substitution or elimination
Substitution:
10d + 25q = 285
d = 15 - q
Elimination:
10d + 25q = 285
-10(d + q) = -10(15)
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