There are 36 students in a class The number of boys is twice the number of girls There are 13 boys ahead of Sarita who ranked 19th in the class How many girls are behind the Sarita?

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Solution

The correct option is D 6
Total number of students in the class=36
Number of girls in the class =x
Number of boys in the class=2x
$x + 2 x = 36$
$3 x = 36$
$x = 12$
Number of girls=12
Number of boys $2 x = 24$
Sarita's rank in the class is 19th. There are 13 boys ahead of her. Therefore, there are 5 girls ahead of her.
Therefore, number of girls behind sarita $12 - 5 - 1 = 6$
Answer is Option B

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