SOLUTION: I have $9.45 in quarters and dimes in my pocket. The number of dimes is 18 less than twice the number of quarters. How many of each do I have in my pocket? I tried but i keep gett

Question 495533: I have $9.45 in quarters and dimes in my pocket. The number of dimes is 18 less than twice the number of quarters. How many of each do I have in my pocket?
I tried but i keep getting stuck. This is what I tried doing:
dimes=18-2(quarters)
#of dimes + # of quarters=$9.45
(18-2(quarters)) + # of quarters= $9.45
18-3(quarters)=$9.45
-3(quarters)= -8.55
quarters=2.85
thats not possible
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Write an equation for each statment:
:
I have $9.45 in quarters and dimes in my pocket.
.10d + .25q = 9.45
:
The number of dimes is 18 less than twice the number of quarters.
d = 2q - 18
:
In the 1st equation replace d with (2q-18)
.10(2q-18) + .25q = 9.45
.2q - 1.8 + .25q = 9.45
.2q + .25q = 9.45 + 1.80
.45q = 11.25
q =
q = 25 quarters
:
I know you can find the number of dimes now, check the total in the 1st equation

How many of each do I have in my pocket?
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