Question

PLS HELP

heres my question i pinned as a picture

Answer 1

Advanced ($10): A

Door ($13): D

Money: 10A + 13D = 544 ⇒ 1(10A + 13D = 544) ⇒ 10A + 13D = 544

Quantity: A + D = 46 ⇒ -10(A + D = 46) ⇒ -10A - 10D = -460

3D = 84

D = 28

Quantity: A + D = 46 ⇒ A + (28) = 46 ⇒ A = 18

Answer: advanced = 18 people, at the door = 28 people