a large box of chocolates cost $3 more than a small box. a customer buys three small boxes and four large boxes and pays $64.50. find the cost of each sized box.

Question

I'm completely stumped, been trying to figure it out for an hour and my parents can't even figure it out.

Answer 1

If the small box costs x, the large box costs x+3, so just add up the costs:
3x + 4(x+3) = 64.50