Sandra bought 9 I teams from Walgreens for a total of $\$54$. Bottles of hand sanitizer cost $\$8$ each and face mask cost $\$3.50$ each. How many bottles of hand sanitizer did she buy?
Let's call the number of hand sanitizers x,
That would make the number of face masks 9 - x.
8(x) + 3.5(9 - x) = 54
4.5x + 31.5 = 54
4.5x = 22.5
x = 5.
She bought 5 bottles of hand sanitizer. :))
=^._.^=