The table shows quiz marks out of 25 in each subject.   English Geography Mathematics Science Andy 87 98 71 38 Bill 80 48 47 78 Clive 53 75 81 82 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 43 extra marks by mistake. What are his real marks?