SOLUTION: you have a jar of quarters and dimes worth a total of $10.20. If you have 69 coins in the jar, how many of them are quarters and how many of them are dimes?
Algebra ->
Customizable Word Problem Solvers
-> Coins
-> SOLUTION: you have a jar of quarters and dimes worth a total of $10.20. If you have 69 coins in the jar, how many of them are quarters and how many of them are dimes?
Log On
Question 1040716: you have a jar of quarters and dimes worth a total of $10.20. If you have 69 coins in the jar, how many of them are quarters and how many of them are dimes?
You can put this solution on YOUR website! x=quarters
y=dimes
x+y=69
.25x+.10y=10.20
x+y=69
25x+10y=1020
multiply the first by -25
-25x-25y=-1725
25x+10y=1020
-15y=-705
y=47 dimes or $4.70
x=22 quarters or $5.50
They add to $10.20
