7. Kiwi fruit contain roughly two and a half times as much vitamin C as the same weight of oranges. What weight of kiwi fruit contains approximately the same amount of vitamin C as 1 kg of oranges?

11. Nine of the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 are to be put in two groups so that the sum of thenumbers in each group is a multiple of four.What is the largest number that could be left out?

12. When my pot of paint is half full, it weighs 5.8 kg. When my pot of paint is one quarter full, it weighs 3.1 kg. What is the weight of the full pot?

14. A group of children stand evenly spaced around a circular ring and are numbered consecutively 1, 2,3, and so on. Number 13 is directly opposite number 35. How many children are there in the ring?