Posted by Jona on Tuesday, February 19, 2013 at 7:08pm.
A bank teller is counting the total amount of money in a cash register at the end of the day. There is a total of $2600 in denominations of $1, $5, $10 and $20 dollar bills.
The total number of paper bills is $235. The number of twenty dollar bills is twice the number of $1 dollar bills and the number of $5 dollar bills is ten more than the number of $1 dollar bills. What is the system of equations to represent the situation. Then use matrices to find the number of bills for each denomination.

PLEASE HELP!!! ALGEBRA  Reiny, Tuesday, February 19, 2013 at 8:28pm
Did you mean
" the total number of paper bills is 235" , not $235 ?
let the number of $1 bills be x
number of $20 bills = 2x
number of $5 bills = x+10
number of $10 bills = y
x + 2x + x+10 + y = 235
4x + y = 225 (#1)
1(x) + 20(2x) + 5(x+10) + 10y = 2600
x + 40x + 5x + 50 + 10y = 2600
46x + 10y = 2550
23x + 5y = 1275 (#2)
Using matrices ???? , why?
from #1, y = 2254x
sub into 2nd
23x + 5(225x) = 1275
23x + 1125  5x = 1275
18x = 150
x = 150/18 > not a whole number,
something wrong with your question, check your typing

PLEASE HELP!!! ALGEBRA  Nicole, Monday, October 24, 2016 at 7:58pm
That is a Algebra Question. EVERYBODY has a problem with this question. Anyway this is a problem I tell everybody, I'm sorry I can not answer
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