Answer:
<h3>If the taste tester takes 10 minutes to eat a cheeseburger, then it would take him  is 

 minutes
Eating round the clock, it would take him   is 

</h3>
Step-by-step explanation:
Given that "In order to develop a more appealing cheeseburger, a franchise used taste tests with 13 different buns, 5 different cheeses, 2 type of lettuce, and 3 types of tomatoes"
From the given we can write 
13 buns
8 cheese
4 lettuces
3 tomatoes
  ∴ There would be  different cheeseburger combinations  is given by
 
 
Given that if the taste tester takes 10 minutes to eat a cheeseburger, then it would take him
 minutes
 minutes
Eating round the clock, it would take him
 hours
 hours
