The table shows quiz marks out of 100 in each subject.   English Geography Mathematics Science Robert 50 79 75 34 Samuel 73 63 86 64 Thomas 54 45 58 97 1. How many marks did Thomas totally obtain in Mathematics and Science?   2. How many more marks does Robert need for a perfect score in Mathematics?   3. In Geography, how many more marks did Robert get than Samuel?   4. Find the difference between Robert's Science marks and Samuel's English marks.   5. The Mathematics teacher by mistake gave Thomas 2 times his actual marks. What are his actual marks?