The sum of three consecutive numbers is 72. what is the smallest of these numbers?

If you could answer these your a life saver

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.