8. The following table shows the results of Peter and Mary in three
quizzes.
Quiz 1
Quiz...
Mathematics, 09.03.2021 06:10 AmbitiousAndProud
8. The following table shows the results of Peter and Mary in three
quizzes.
Quiz 1
Quiz II
Quiz III
Peter
x
34
62
Mary
60
58
40
Weight
1
1
3
The weighted mean mark of Peter is 52.
(a) Find the value of x.
(b) The teacher has adjusted the weight of quiz III. As a result, the
weighted mean marks of Peter and Mary are the same. Find the
new weight of quiz III.
Answers: 2
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