Answer:
2
Explanation:
What he needs is
cups of almonds, so let's convert it into a mixed number by multiplying the denomiator by 1 and add it to the numerator, giving us
.
So, what Oscar need is
cups of almonds
However, the amount of almond per package is

To find out how many package he needs, we divide what he needs by the amount of almond per package like this:

When dividing by a fraction, always convert it into a multiplication by flipping the divisor
to be

Then, the equation will become:
×
=
, which is also equals to 2 because 30 divided by 15 is 2.
Therefore, Oscar should by 2 packages of almonds.