The table shows quiz marks out of 25 in each subject.   English Geography Mathematics Science Andy 57 90 72 28 Bill 83 53 77 57 Clive 50 88 80 94 1. What is the difference betweenClive's marks in English and Science?   2. How many more marks does Andy need for a perfect score in Mathematics?   3. In Geography, how many more marks did Andy get than Bill?   4. Find the difference between Andy's Science marks and Bob's English marks.   5. The Mathematics teacher gave Clive 51 extra marks by mistake. What are his real marks?