Two students, Jack and Jill, take an examination in French, German and English. The table below. shows the marks for each student and the weight to be applied to each subject. Number of lessons Subject Mark per week Subject French German English Mathematics 64% 5. Marks for Jack 80 72 46 English 52% 4. Marks for Jill 64 82 40 Science 71% Weight 2 3 x French 75% 82% History Which method gave the higher mark and by how much? Calculate the value of x for which Jack and Jill have the same weighted mean mark and find the value of this mean. (C Additional)