Answer the following question.
With her savings, Sara bought two books: a book for 5.5£ and a book for 6.5£. She gives a 20£ bill to the seller. How much change does she get back?
Step-by-step reasoning process: To find out how much the saleswoman should return to her, we have to find out how much Sara spent in total. She spent 5.5£ + 6.5£ = 12£. So she gives 20£ and the cashier should keep 12£. The cashier therefore returns the difference between these two sums: 20£ – 12£ = 8£.
The answer is 8.

Answer the following question.
Jaron wants to raise enough money selling candy bars to win the Nintendo Switch prize. He needs 2000 points for the Nintendo Switch. He has already sold 8 chocolate bunnies that are worth 100 points each. Each Snickers bar he sells earns 25 points. How many Snickers bars does he need to sell the win the Nintendo Switch?
Step-by-step reasoning process: Jaron has earned a total of 8 * 100 points = 800 points. To win the Switch he needs to earn 2000 - 800 = 1200 points. Therefore, he needs to sell 1200 / 25 = 48 Snickers bars.
The answer is 48.

Answer the following question.
Nikka has a 100 stamp collection. Thirty-five percent of her stamps are Chinese, 20% are US stamps, and the rest are Japanese stamps. How many Japanese stamps does Nikka have?
Step-by-step reasoning process: Nikka has 100 x 35 / 100 = 35 Chinese stamps. She has 100 x 20 / 100 = 20 US stamps. So, Nikka has 35 + 20 = 55 stamps that are not Japanese. Thus, Nikka has 100 - 55 = 45 Japanese stamps.
The answer is 45.

Answer the following question.
James had two browsers on his computer. In each browser, he opened three windows, each with ten tabs. What's the total number of tabs he opened in all the browsers together?
Step-by-step reasoning process: The total number of tabs in three windows of each browser is 10 * 3 = 30 tabs. If James had two browsers on his computer and in each browser he opened three windows, the total number of tabs in the two browsers is 2 * 30 = 60 tabs.
The answer is 60.