SOLUTION: Joe has $30.00 in 14 bills. How many $5.00 and $1.00 bills does he have? Show solution

Question 833512: Joe has $30.00 in 14 bills. How many $5.00 and $1.00 bills does he have? Show solution
Answer by hovuquocan1997(83) (Show Source): You can put this solution on YOUR website!
Let's the number of $5 bills be "x" and the number of 1$ bills be "y"
Now we have the total is 14 bills, that means
Then we have the total money is $30, that means we have (because x is $5 and y is $1)
Now let's solve the system of equation :)

Solved by pluggable solver: SOLVE linear system by SUBSTITUTION

Solve:
We'll use substitution. After moving 1*y to the right, we get:
, or . Substitute that
into another equation:
and simplify: So, we know that y=10. Since , x=4.

Answer: .

So Joe has 4 $5 bills and 10 $1 bills
TA-DAH
:D
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