there are 45 children in a class.if there are 3 more girls than boys,how many are girls?
Just give me a example of how to solve
If x = # boys, then x+3 = # girls.
x + x +3 = 45
To find the number of girls in the class, you need to set up an equation based on the given information. Let's assume the number of boys in the class is represented by "x."
Since there are 3 more girls than boys, the number of girls would be represented by "x + 3."
Given that the total number of children in the class is 45, you can create the equation:
x + (x + 3) = 45
Now, solve for "x" by combining like terms:
2x + 3 = 45
Subtract 3 from both sides of the equation:
2x = 42
Finally, divide both sides of the equation by 2 to solve for "x":
x = 21
Therefore, there are 21 boys in the class.
To find the number of girls, substitute the value of "x" back into the equation:
x + 3 = 21 + 3 = 24
So, there are 24 girls in the class.