ANSWER IN DESCRIPTION

Question

A large pizza at Lazarra's Pizzaeria cost $6.80 plus $0.90 for each topping. The cost of a large cheese pizza at Guido's Pizza is $7.30 plus $0.65 for each topping. How many toppings need to be added to a large cheese pizza from Lazarra's Pizzaeria and Guido's Pizza in order for the pizzas to cost the same, not including tax?

Answer 1

Let the number of toppings be x.

given,

6.8 + 0.9x = 7.3 + 0.65x

or 0.9x - 0.65x = 7.3 - 6.8

or 0.25x = 0.5

or x = 0.5/0.25 =2

So, number of required toppings is 2