Answer:
3
Explanation:
1 person eats 2/5 of a pizza
6 people eat 2/5 * 6 pizzas
But what value is 2/5 * 6?
You could do it this way
12/5 = 2 2/5
This number is telling you that you need 2/5 of a pizza over 2.
The group should order 3 pizzas. There will be left overs, but that won't matter. Everyone will get at least 2/5 of a pizza.