1.

In a class, 60% of the total number of students are boys and there are 14 girls. How many students are there in the class?

Answer»

Let the total number of students = Z 

Percentage of girls = (100 – 60) % = 40% 

Now, 

Number of girls = 40% of Z 

⇒ 14 = Z × 40/100 

⇒ Z = 14 × 100/40 

⇒ Z = 14 × 5/2 

⇒ Z = 35



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