Question: Unrest leads to 30 days of protest in 21 different cities. In each city, there are 10 arrests per day. The average person spends 4 days in jail before trial and then spends half of a 2-week sentence. How many combined weeks of jail time are there?
Answer with step-by-step thinking: Each city arrest 30 * 10 = 300 people during the protest. So a total of 300 * 21 = 6300 people were arrested. They spend 14 / 2 = 7 days of their sentence in jail. So they spend a total of 7 + 4 = 11 days in jail. So there was a total of 6300 * 11 = 69300 days in jail. So they spent 69300 / 7 = 9900 weeks in jail.
So the answer is 9900.


Question: Mrs. Lacson harvested 80 sweet potatoes. She sold 20 of them to Mrs. Adams and 15 of them to Mr. Lenon. How many sweet potatoes are not yet sold?
Answer with step-by-step thinking: Mrs. Lacson sold a total of 20 + 15 = 35 sweet potatoes. Hence, there are still 80 - 35 = 45 sweet potatoes left unsold.
So the answer is 45.


Question: There are 20 bicycles, 10 cars and 5 motorcycles in the garage at Connor's house. How many wheels are there in the garage?
Answer with step-by-step thinking:
The number of bicycle wheels is 2 × 20 = 40. The number of car wheels is 4 × 10 = 40. The number of motorcycle wheels is 2 × 5 = 10. There are 40 + 40 + 10 = 90 wheels in the garage.
So the answer is 90.