Okay so your final mark is (coursework mark out of maximum mark) x 0.6 + (exam mark out of maximum mark) x 0.4. For example if you got 60 out of 100 for coursework and 80 out of 100 for the exam let's just say, your final mark would be (60/100) x 0.6 + (80/100) x 0.4 = 0.68 = 68%