If I have 24 coins in dimes and quarters. THe total value of coins is $3.00. How many coins do I have?
2006-11-01 12:07:35 · 4 answers · asked by SICK MY DUCK! 1 in Science & Mathematics ➔ Mathematics
you have to set up two equations....x+y=24 and .10x+.25y=3.00
now you can do to things...one way is to solve the first equation for x or y then x=24-y.... sub this into x in the second equation
.10(24-y)+.25y=3.00
2.4-.1y+.25y=3.00 combine terms
2.4+.15y=3.00
subtract 2.4 from both sides
.15y=.6 divide both sides by .15
y=4 x=20
2006-11-01 12:16:12 · answer #1 · answered by travislizzie 2 · 0⤊ 0⤋
20 dimes= $2
4 quarters $1
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24 coins $3
2006-11-01 12:16:21 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You just answered your own question, boopsy!- Garfield the Comic says this.
2006-11-01 12:11:34 · answer #3 · answered by Anonymous · 0⤊ 0⤋
wtf? 24
2006-11-01 12:09:45 · answer #4 · answered by JustMe 2 · 0⤊ 1⤋