SOLUTION: A jar of dimes and quarters contains $15.25. There are 103 coins in all. How many quarters in the jar? thanx

Question 40015: A jar of dimes and quarters contains $15.25. There are 103 coins in all. How many quarters in the jar?
thanx
Answer by AnlytcPhil(1806) (Show Source): You can put this solution on YOUR website!

A jar of dimes and quarters contains $15.25. There are 103 
coins in all. How many quarters in the jar?
thanx

Let D = the number of dimes and Q be the number of quarters

>>...There are 103 coins in all...<<

Therefore D + Q = 103

>>...A jar of dimes and quarters contains $15.25...<<

The money which the D dimes is worth is $.10 times D or .10D

The money which the Q quarters is worth is $.25 times Q or .25D

So .10D + .25D = 15.25

We have this system:

   D +    Q = 103
.10D + .25D = 15.25


Can you solve that system?  If not post again.

Answer 70 dimes and 33 quarters

Edwin McCravy
AnlytcPhil@aol.com

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