1. The problem involves finding the total marks for 5 tests given that the mean score for 2 tests is 75. 2. Mean score is calculated as total marks divided by the number of tests. We have mean for 2 tests: $$\text{Mean} = \frac{\text{Total marks for 2 tests}}{2} = 75$$. 3. To find the total marks for these 2 tests, multiply both sides by 2: $$\text{Total marks for 2 tests} = 75 \times 2 = 150$$. 4. The problem states there are 5 tests in total. So we want to find the total marks for all 5 tests. 5. Since the mean is given for 2 tests only, and no additional information is given for the other 3 tests, we assume the other 3 tests had the same mean score 75. 6. Total marks for 5 tests is: $$\text{Total marks for 5 tests} = 5 \times 75 = 375$$. Final answer: The total marks for the 5 tests is **375**.