How do i find out what mark i need on my final exam to pass?

: How do i find out what mark i need on my final exam to pass?
Hi I am currently at 61% in math. The final exam is worth 30% of our mark. I am aiming for at least 50% on the exam but what is the minimum i need to still pass(50%) math. Oh also there is 40 multiple choice questions on the final if that helps.

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Answer by KG
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