concert. After the concert, she had sold 72 items and earned a total of $795. If the hats sold for $5.50 each and the shirts were $15 each, how many of each item was sold?

Question

I need help on writing the equations

Answer 1

Even though your question is poorly written (to see what I mean, please go back and read EXACTLY what you wrote!), I will try to help.

H = # of hats sold

S = # of shirts sold

H + S = 72

5.50H + 15S = 792

Substitution may be easier here

55(72-S) + 150 S = 7920

95S = 7920-55*72

I will leave the arithmetic to you.