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DIRECTIONS for the following four questions:
The proportion of male students and the proportion of vegetarian students in a school are given below. The school has a total of 800 students, 80% of whom are in the Secondary Section and rest equally divided between Class 11 and 12.
In Class 12, twenty five per cent of the vegetarians are male. What is the difference between the number of female vegetarians and male non-vegetarians?
There are 640 secondary section students, 80 11th class students and 80 12th class students.
If the fraction of vegetarians in 12th class is x, then
80x + 80*0.5 + 640*0.55 = 0.53*800
=> x + 0.5 + 4.4 = 5.3 => x = 0.4
=> There are 32 vegetarian students in class 12.
25% of class 12 i.e 8 are males.
So there are 24 vegetarian female students.
No. of non-veg males = 40 and veg females=24. Required answer 40 - 24 = 16.
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