Answer: 2/5 of a pizza for for $6 offers the best deal.
Step-by-step explanation:
Pizzas are sold by fraction at Arnold's Pizzeria.
1)You can buy 1/6 of a pizza for $2.75. This means that the cost of a full pizza at this rate would be
6 × 2.75 = $16.5
2) 2/5 of a pizza for for $6, This means that the cost of a full pizza at this rate would be
6 × 5/2 = $15
3) 1/2 of a pizza for $8. This means that the cost of a full pizza at this rate would be 8 × 2 = $16
4) 2/3 of a pizza for $12. This means that the cost of a full pizza at this rate would be 12 × 3/2 = $18
Therefore, the best deal is 2/5 of a pizza for for $6
