1. Then a survey of 30 students and it was found that 17 of them have a cat, based on these results, guess how many students out of 300 students in the school have cats?
2. If one out of 12 students in a school shares their locker, how many students share their locker in a school with 456 students?
3. Sabrine runs 2 km in 30 minutes. At this rate, what would you run in 90 minutes? And at what rate did she run each hour?