Chloe has 468 coins in her piggy bank consisting of quarters, nickels, and dimes. She has in her bank three times as many quarters as she does nickels. The value of her saving comes to $62.40. How many o feach type of coin does she have in her bank?
What I need is the third equation, and I have the other two which are:
x+y+z=468
.25x+.5y+.10z=62.4
What is the third equation
2007-02-08 12:56:10 · 6 answers · asked by RickySingh2006 2 in Science & Mathematics ➔ Mathematics
x = 3y
(quarters = 3 times nickels)
2007-02-08 12:59:26 · answer #1 · answered by teekshi33 4 · 0⤊ 0⤋
The third equation comes from "her bank has three times as many quarters as nickels"
Therefore
3y = x or -x + 3y + 0z = 0
2007-02-08 20:59:33 · answer #2 · answered by Milton's Fan 3 · 0⤊ 0⤋
First of all, for your second equation, do you mean:
.25x+.05y+.10z=62.40
Your third equation should be:
x=3y
2007-02-08 21:06:08 · answer #3 · answered by KittyC22 2 · 0⤊ 0⤋
3y = x
2007-02-08 21:01:59 · answer #4 · answered by davidosterberg1 6 · 0⤊ 0⤋
(quarters)=3nickel
2007-02-08 21:02:06 · answer #5 · answered by phong pham 2 · 0⤊ 0⤋
x = (171.6 - 9.5z) over .20
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2007-02-08 21:00:58 · answer #6 · answered by aeiou 7 · 0⤊ 0⤋