Paulette has $140 in $5 and $10 bills. the number of $10 bills is one less than twice the number of $5 bills. how many of each does she have? provide your answer below ? =$ 10 bills ? =$5 bills

this needs a system

140=5x+10y

y= 2x-1

Now subsitute 2x-1 in for y

140=5x +10(2x-1)

140 = 25x -10

bring over the 10

150 = 25x

the divide

x = 6

now substitue x in in 2x-1

2(6) -1 = 11

there you have it, you have 6 five dollar bills and 11 ten dollar bills.

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right