[Question]Santana has 7 brothers. 3 of them have birthdays in March, 1 of them has a birthday in October, 1 has a birthday in November, and another 2 of them were born in December. If Santana always buys each of her brothers a birthday present and a Christmas present, how many more presents does she have to buy in the second half of the year than the first half of the year?
[Answer]Santana has 1 + 1 + 2 = 4 brothers with birthdays in the second half of the year. She has 7 brothers - 4 brothers = 3 brothers with birthdays in the first half of the year. Altogether, she has to buy 4 + 7 = 11 presents in the second half of the year. Therefore, she has to buy 11 - 3 = 8 more presents in the second half of the year. The answer is 8.

[Question]Anna's mom gave her $10.00 to buy anything she wanted from the candy store. Anna bought 3 packs of chewing gum for $1.00 each, 5 chocolate bars at $1 each and 2 large candy canes for $0.50 each. How much money did Anna have left?
[Answer]Anna bought 3 packs of chewing gum that were $1 each for a total of 3 * 1 = $3. Anna bought 5 chocolate bars that were $1 each for a total of 5 * 1 = $5. Anna bought 2 large candy canes that were $.50 each for a total of 2 * .50 = $1. The total amount spent was $3 + $5 + $1 = $9.00. Anna had $10 to start and spent $9.00 so she had $10 - $9.00 = $1.00 left. The answer is 1.

[Question]Beth is looking at her book collection and is wondering how many comic books she owns. She has 120 books and 65% are novels. 18 are graphic novels. The rest are comic books. What percentage of comic books does she own?
[Answer]The proportion of graphic novels is .15 because 18 / 120 = .15. The percentage of graphic novels is 15 because 100 x .15 = 15. The percentage of comic books is 20 because 100 - 65 - 15 = 20. The answer is 20.

[Question]Jerome is taking a 150-mile bicycle trip. He wants to ride 12 miles for 12 days. How long will he ride on the 13th day to finish his goal?
[Answer]
Jerome rides a total of 12 x 12 = 144 miles in 12 days. So, he will ride 150 - 144 = 6 miles on the 13th day to finish his goal. The answer is 6.