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Subjects carry weights Physics 2, Chemistry 1, English 1, Mathematics 2. A student scores 60 in Physics, 70 in Chemistry, 70 in English and 80 in Mathematics. What is the weighted mean of the marks?

1. 60
2. 70
3. 80
4. 85

Correct answer: 70

Solution

Multiplying each mark by its weight and dividing by total weight 6 gives 420/6 = 70.

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