There are 3 girls in the class.
How to form the formula?
We must read and understand the question. Now we must assign a variable to the primary unknown value. Now we must make a formula using the unknown value for the known value.
We can find the number of girls as shown below:
Let the number of girls be x.
It is given that the number of boys = 15
It is also given that the number of boys is equal to three more than four times the number of girls.
The equation can be formed as shown below:
4x + 3 = 15
⇒ 4x = 12
⇒ x = 3
The value of x is found to be 3. The number of girls in the class is 3.
Therefore, we have found that there are 3 girls in the class.
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