Question

At a local pizza shop, large pizzas cost $14.50 and small pizzas cost $9.00. On Thursday, the number of large pizzas sold was 3 less than twice the number of small pizzas sold. The total value of all pizzas sold was $640.50. How many of each type of pizza did the pizza shop sell?

Answer 1

Small pizzas = 21

Large pizzas = 39

Explanation:

The number of small pizzas sold be x

So, the number of large pizzas sold be 2x - 3

And the total value is $640.504

Now the equation would be

$14.50x + $9 × (2x - 3) = $640.50

$14.50x + 18x - $27 = $640.50

$32.50 = $640.50 + $27

$32.50x = $667.50

x = 21

Now the large pizzas is

= 2 × 21 - 3

= 39

The same is to be considered