<span>To answer this question you need to find the highest number below 30 which can be divided by 8 (for 7/8) and 3 (for 2/3). This number would be 24. So 21 own football boots, 16 own a football and there are 24 children in the class.
I'll give you a study tip. If you actually just break down the problem it's much easier. See how it says 5 tens, it's basically asking you what is 5 times 10
