[Question]A boy has 12 oranges. He gives one-third of this number to his brother, one-fourth of the remainder to his friend and keeps the rest for himself. How many does his friend get?
[Answer]He gives a third of 12 oranges to his brother which is 12 * (1 / 3) = 4 oranges. He has 12 - 4 = 8 oranges left. He gives a fourth of 8 oranges to his friend which is 8 * (1 / 4) = 2 oranges. The answer is 2.

[Question]Jose had 400 tabs opened up in his windows browser. After about one hour of browsing, he closed 1/4 of the tabs to allows easy browsing. He read some news from different pages, then closed 2/5 of the remaining tabs. If he closed half of the remaining tabs after further analyzing some pages, how many windows tabs did he have remaining open?
[Answer]When he closed 1 / 4 of the tabs, he closed 1 / 4 * 400 = 100 tabs. The number of windows tabs that remained open is 400 - 100 = 300. After reading some news from different pages, he closed 2 / 5 of the remaining tabs, a total of 2 / 5 * 300 = 120 pages. The number of tabs that remained open is 300 - 120 = 180. If he closed half of the remaining tabs after further analyzing some pages, he closed a total of 1 / 2 * 180 = 90 pages. The total number of tabs that remained opened is 180 - 90 = 90. The answer is 90.

[Question]Keith and Blaine went fishing. Blaine caught 5 fish while Keith caught twice as many as Blaine's. How many fish did they catch together?
[Answer]Keith caught 5 x 2 = 10 fish. Therefore, they caught a total of 5 + 10 = 15 fish. The answer is 15.

[Question]Sara is 6 inches taller than her brother Joe. Joe is 3 inches taller than his friend Roy. If Roy is 36 inches tall, how tall is Sara?
[Answer]
Roy is 36 inches tall. Joe is 3 + 36 = 39 inches tall. Sara is 6 + 39 = 45 inches tall. The answer is 45.