In a class, there are 18 very tall boys. If these constitute three fourths of the boys and the total number of boys is two-thirds of the total number of Students in the class, what is the number of girls in the class ?

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In a class, there are 18 very tall boys. If these constitute three fourths of the boys and the total number of boys is two-thirds of the total number of Students in the class, what is the number of girls in the class ?

B12

C18

D21

Answer:

B. 12

Read Explanation:

The number of boys in the class = 18 x 4/3 = 24 The total number of students in the class = 24 x 3/2 =36 The number of girls in the class 36-24 = 12

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