Hello i need on number 5,6,7 and also sorry about writing on it. i will mark as the brain thing

Ok I can help you on number 5 and 6. Sorry I dont understand number 7. You are correct on number six. There is not enough information because they do not say how many are 12 and how many are younger than 12. So on number 5 you would take 67 and divide it by 5. That is 13.4 so your answer for number 5 would be 13.4. Hope this helps! 

5) 67 miles / 5 days = 13.4 miles a day (answer 4)
6) answer 5 - we don't know how many adults/children are there
7) perimeter = 3 sides added = 4 + 7 + other side which is also 7 = 18 (answer 4)

Why are u not just putting the numbers this is to much