For these types of questions you normally do the new amount - original amount / the original. So 1075-620/620 which gives you 73.39%.
3 dozen= 36, you need 720.
720/36= 20.
This means you'll need to scale up the recipe to a factor of 20. In other words, you'll need to multiple the amount of each ingredient required by 20 in order to have enough cookies for 360 people to each have two.
The answer is 3 because 1/3 is 3
Simply change 1/4 to a decimal
1/4 = 0.25
now we can multiply 0.25 and 32
lets do the math:)
0.25 x 32 = 8
your answer = 8
When in doubt, eat a pineapple :)