Question

Nia sells pizzas. Large pizzas cost

$8 each, and small pizzas cost $6 each.
She sold 12 pizzas for $84. How many
of each size pizza did Nia sell?

Answer 1

6 large and 6 small pizzas

Answer 2

Nia sold 6 large pizzas and 6 small pizzas.

Explanation:

x+y=12

8x+6y=84

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x=12-y

8(12-y)+6y=84

96-8y+6y=84

96-2y=84

2y=96-84

2y=12

y=12/2

y=6

x+6=12

x=12-6=6