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.

step-by-step explanation: