Question

The number of girls in a class is 6 more that the number of boys. If there are 36 students in all, how many girls are there in the class?

Answer 1

Let's call the number of boys in the class "B".

According to the problem, the number of girls in the class is 6 more than the number of boys. So we can write an equation:

number of girls = B + 6

We also know that the total number of students in the class is 36. So we can write another equation:

number of boys + number of girls = 36

Now we can substitute the first equation into the second equation:

B + (B + 6) = 36

Simplifying this equation:

2B + 6 = 36

Subtracting 6 from both sides:

2B = 30

Finally, dividing by 2:

B = 15

So there are 15 boys in the class.

To find out how many girls there are, we can use the first equation:

number of girls = B + 6 = 15 + 6 = 21

So there are 21 girls in the class.