Answer:Please read the answer below.Step-by-step explanation:Question 2. 25% of what number is 30?25% - Whole 30, 50% Whole 60, 75% Whole 90, 100% Whole 120Question 3. What operation did you use the find the whole?In the previous question, I found the whole, adding 30 to the previous value.For example, I added 30 to 30 and calculate 60. To 60 then i added 30 to get 90 and added 30 to get 120 because in this question, all the 4 parts were exactly the same size (30).Question 4. What are you multiplying/dividing? Do you use the percent or something else?In the specific case of question 2, I noticed that the size of the parts were exactly the same, using it for calculating the whole. If 1 part out of 4 is 30, then 2 parts or 50% are 60, 3 parts or 75% are 90 and then 4 parts of 100% are the whole I'm being asked, in this case, 120.