Best Answer

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%

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More information about weighted mean:

http://en.wikipedia.org/wiki/Weighted_mean

Q: A student writes 2 exams and gets 83 percent for the first and 90 percent for the second The second exam counts for 66 percent of the overall result What is his final percentage?

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