d Question 16 , 17 & 18 | Job Exam Rare Mathematics (JEMrare) - Solved MCQs

# Question 16 , 17 & 18

Question 16: In a class consisting of boys and girls there are 30 students. Girls are the third fifth of total number. How many boys are there in the class?

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Solution:

Let the number of boys in the class is ‘x’;

Girls are 3/5 of 30 students. so;

according to question;

but boys are ‘x’ and girls are 3/5 of 30 students, so;

so boys are 12

Question 17: Find the ‘x’ value where x:3=4:8

Solution

We can write given expression as below as well;

Question 18: Evaluate 32-15×2+3