Question

Dave wants to estimate how many pounds of dog food his dogs eat in one year.

Answer 1

12 x d=
12= how many months there are
d= pounds in each dogfood bag

Answer 2

Let us say the dog eats x pounds of dog food in one month.

There are 12 months in a year.

So applying unitary method:

Quantity of dog food required by dog in 12 months = 12x

Answer : The dog requires 12x pounds of dog food in a year.