Courses
Courses for Kids
Free study material
Offline Centres
More
Store

In a class, the number of girls is x and that of boys is y. Also, the number of girls is 10 more than the number of boys. If the number of boys is 20. Then the number of girls isa) 30b) 20c) 10d) 0

Last updated date: 06th Sep 2024
Total views: 427.5k
Views today: 6.27k
Verified
427.5k+ views
Hint: In this question we have to find the number of girls in the class. For that we are going to solve using algebraic methods which cover the simple operation of mathematics like addition. That is we will add the number of girls more than boys and the number of boys to get the required answer.

Formulas used:
Number of girls = Number of girls is more than the number of boys + number of boys

Given let the number of girls in the class be $x$.
Let the number of boys be $y = 20$
It is also given that the number of girls is $10$ more than the number of boys,
That is the number of girls is $10 + y$
$\Rightarrow x = 10 + y$
We have to find the number of girls in the class.
We have the number of girls = $10 + y$
$\Rightarrow x = 10 + y$
Now let us substitute the number of boys that is the value of $y$ in the above equation, we get
$\Rightarrow x = 10 + 20$
$\Rightarrow x = 30$
$\therefore$ The Number of girls in the class is $30$.