Question

Mike and steve have wallets with 5$ and 10$ bills. If together they have 20 bills, and in total 135$, how many 5$ and 10$ do they have" , you dont have to solve it , just put it in system of equation form please!

Answer 1

y+x=20 this is the number of bills
5x+10y=135 this is the amount of money

X is the 5 dollar bills and y is the 10 dollar bills. 

If you put this into a graphing calculator it would give you your answer (or answers)