Question

in school A, there are two sections of class VIII having 32 and 28 students. Another school B
has three sections of class VIII with number of students 20. 25 and 35. Find the probability that
the topper of class VIII is from school B. Which school has a better chance to have a topper?​

Answer 1

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Answer 2

The probability that topper of class viii is from school B $=\frac{4}{7}$

∴ School B has a better chance to have a topper.

Step-by-step explanation:

Given,

Number of student in school A = 32+28 = 60

Number of student in school B = 20+25+35 = 80

Total number of student = 60+80= 140

The probability that topper of class viii is from school B = $\frac{80}{140}$ $=\frac{4}{7}$

The probability that topper of class viii is from school A =$(1- \frac{4}{7} )$$=\frac{3}{7}$

∴ School B has a better chance to have a topper.[ since $\frac{4}{7}$>$\frac{3}{7}$]