Question

Mary's paycheck was for $600.00. When she cashed her check at the bank, the teller gave her a total of 40 bills, both tens and twenties. How many tens did the teller give Mary?

Answer 1

Think you can help me??

Answer 2

let no. of 10's be x and no. of 20's be y
now given that x+y = 40
also 10x + 20y = 600
just solve for x & y.

Answer 3

huh??

Answer 4

x+y =40
and 10x + 20y = 600
solve them simultaneously..
x is number of tens//