Question

There are $x$ students in a class. If there are $y$ girls, then find the ratio of number of boys to the total number of students.

• A. $(x+y):x$
• B. $(x-y):y$
• C. $y:x$
• D. $(x-y):x$

Answer 1

The correct option is D $(x-y):x$

If there are $x$ students in a class, and $y$ of them are girls, then number of boys in the class will be $x-y$.

So, ratio of number of boys to the total number of students will be $(x-y):x$