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cluponka [151]
3 years ago
7

In a senior college, 25% of the Year 11 students and 40% of the Year 12 students would

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
7 0
The answer is 408 students
kotykmax [81]3 years ago
3 0

Those in favour:

=(Quantity Yr11 Students)(0.75) + (Quantity of Yr12 Students)(0.60)

=(320)(0.75) + (280)(0.60)

=408 students

Probablity of a Year 11 Student:

=(Quantity of Yr11 Students)(0.75)/(Total Students)

=(240)/(600)

=0.4 = 40%

Percentage:

=(Students in favour)/(Total Students)

=408/600

=0.68 = 68%

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