The table shows quiz marks out of 25 in each subject.   English Geography Mathematics Science Andy 57 87 79 27 Bill 91 65 56 47 Clive 59 44 90 85 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 50 extra marks by mistake. What are his real marks?