We have a question: How many portions of 200 ml milk can Jasmine pour from a full 2-liter container of milk?
And an answer: 10
So how you got the answer?
Since there are 1000 ml in 1 liter, then 2 liters is equal to 1000 x 2 = 2000 ml. Thus, Jasmine can pour 2000 / 200 = 10 portions of 200 ml milk.

We have a question: Jerry has an interesting novel he borrowed from a friend to read over the weekend. The book has 93 pages. On Saturday, he reads 30 pages. On Sunday, he goes to church and comes back, sits down, and reads 20 pages of the book. How many pages are remaining before Jerry can finish the book?
And an answer: 43
So how you got the answer?
When Jerry reads 30 pages on Saturday, he would be remaining with 93 - 30 = 63 pages. After reading an additional 20 pages on Sunday, he would be remaining with 63 – 20 = 43 pages.

We have a question: A luxury bag costs $3000. A reseller wants to get a 15% profit. How much should she sell the bag?
And an answer: 3450
So how you got the answer?
The reseller wants to get $3000 x 15 / 100 = $450 profit. Thus, she needs to sell it for $3000 + $450 = $3450.