Math word problem: There are 25 students in Mrs. Roberts 3rd grade class. There are 9 more boys than girls in the class. How many boys and girls are in Mrs. Robert's class.

Let x = the number of girls.

x + x + 9 = 25

2x = 25 - 9

2x = 16

x = 16/2

x = 8

suppose the number of girls in class is x

then, the number of boys is x+9

x+(x+9)=25

1865-7654

16

To solve this math word problem, we can use algebraic equations. Let's assign variables to the number of girls and boys in Mrs. Roberts' class.

Let's say the number of girls is "x."

According to the problem, there are 9 more boys than girls in the class, so the number of boys can be represented as "x + 9."

Now, we can set up an equation using the given information. The total number of students in the class is 25, so we have the equation:

x + (x + 9) = 25

Simplifying the equation, we get:

2x + 9 = 25

Next, let's isolate the variable "x" by subtracting 9 from both sides of the equation:

2x = 25 - 9

2x = 16

Finally, divide both sides of the equation by 2 to solve for "x":

x = 16 / 2

x = 8

So, there are 8 girls in Mrs. Roberts' class.

To find the number of boys, we can substitute the value of "x" back into the equation:

Number of boys = x + 9 = 8 + 9 = 17

Therefore, there are 8 girls and 17 boys in Mrs. Roberts' 3rd-grade class.