Final answer:
To calculate the total percentage mark, add the scores of the two tests and divide it by 200. Determine the grade based on the percentage using the grade scale provided.
Step-by-step explanation:
To calculate the total percentage mark, you need to add the scores of the two tests and divide it by the total marks available, which is 200 in this case. Then, multiply the result by 100 to get the percentage. For example, if a student scores 80 on the first test and 90 on the second test, the total score would be 170. Dividing 170 by 200 and multiplying by 100 gives a percentage of 85%. To determine the grade, you can use a grade scale or criteria set by your school. For instance, if the criteria state that scores above 90% are an A, 80-89% are a B, and so on, a student with 85% would receive a B grade.
Learn more about Calculating total percentage mark and determining grades in tests