Every year in January, Natalia, the librarian, tidies up the books. She has 145 novels, 271 comics, 419 documentaries, and 209 albums to store. She wants to put these in crates that can hold 9 items. How many crates will Natalia use?
Let's think: Let's first calculate the total number of items: 145 + 271 + 419 + 209 = 1044 items. Now let's put the items in the crates: 1044 / 9 = 116 crates.. The answer is: 116.

Mikail's birthday is tomorrow. He will be 3 times older than he was when he was three. On his birthday, his parents give him $5 for every year old he is. How much money will they give him?
Let's think: Mikail is 9 because 3 x 3 = 9. He will get $45 because 9 x $5 = $45.. The answer is: 45.

Bubba bought a new two-story warehouse. When empty, the first floor of the building contains twice as much floor space for storage as the second floor. The first items he brought into his empty building were several thousand boxes; and he put them all on the second floor, which filled one-quarter of the second floor storage space. If the boxes used up 5,000 square feet of storage space, how many square feet of storage space is still available in the building?
Let's think: If 5,000 square feet represents one - quarter of the second floor storage space, then the second floor has 5,000 * 4 = 20,000 square feet of storage space. Since the first floor has twice as much space as the second floor, then the first floor has 20,000 * 2 = 40,000 square feet of storage space. Altogether, when empty, the entire building has 20,000 + 40,000 = 60,000 square feet of storage space. Since the second floor has 5,000 square feet of storage space filled with boxes, then there are 60,000 - 5,000 = 55,000 square feet of unused storage space still available in the building.. The answer is: 55000.

In a class of 300 students, the number of smoking teens is 40% of the class. In a year, 70% of the smoking students are hospitalized from smoking-related complications. Calculate the total number of smoking students from the class who have not been hospitalized from smoking-related complications.
Let's think:
If the class has 300 students, there are 40 / 100 * 300 = 120 smoking students. In a year, 70% of the smoking students are hospitalized from smoking - related complications, a total of 70 / 100 * 120 = 84 students. The number of smoking students who've not been hospitalized from smoking - related complications is 120 - 84 = 36.. The answer is: 36.