Question

Kalina is choosing a sandwich and a drink for lunch. She can choose between turkey, ham, and vegetarian sandwiches. She chooses her drink from a selection of water, orange juice, milk, or lemonade. How many possible ways can one sandwich and one drink be chosen? If one more drink choice were added to the selection, the number of possible ways to choose one sandwich and one drink would increase by

Answer 1

1.
$3\cdot4=12$

2.
$3\cdot5=15$

$15-12=3$
so, by 3

Answer 2

12 then 3

e2020

two different parts