Posted by **Anonymous** on Sunday, January 23, 2011 at 4:18pm.

My friend has currently 62.4% and the final exam is worth 30%. She's wondering how much she should get on the exam to at least pass or boost it up. Please show the math :o

- How to calculate marks to pass with the exam -
**bobpursley**, Sunday, January 23, 2011 at 4:37pm
final mark= .3*FExam+.7*62.4

I am not certain what final mark she needs, but calculate FExam

Fexam=finalmark/.3- 145.6

- How to calculate marks to pass with the exam -
**Damon**, Sunday, January 23, 2011 at 4:40pm
well, you did not say what mark was pass so I will assume it is like 65

Say we have 100 exams in the year

we have taken 70 and the last one is really 30 together

.624 * 70 + x * 30 = .65 * 100

x = (65 -43.68)/30 = .71 or 71 %

It does not matter if we pick 100. the ratio between taken and remaining must just be 70/30 and the sum on the right

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