0
Answer:
87.62 %
Solution:
given: Second exam weight = 66%
then: overall weight = 100% this is conclusion from the question.
the first exam weight = 100-66= 34%
Final result = weighted average =
(first exam result * weight of first exam + second exam reuslt * weight of second exam) / Overall weight
= (83*34+90*66)/100
=(2822+5940)/100
= 8762/100
= 87.62%
---
More information about weighted mean:
http://en.wikipedia.org/wiki/Weighted_mean
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