Please help I’ll mark

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

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i

What's for breakfast? all people who ate at a certain restaurant were surveyed as to what they ordered on a particular sunday morning. 40 ate eggs 42 ate sausage 32 ate pancakes 13 ate sausage and eggs 15 ate pancakes and sausage 11 ate eggs and pancakes 6 ate all three items 3 people didn't eat any of the items how many people ate only pancakes? how many people ate at the resturant that morning? how many people didn't eat eggs?