Class Passing Rate Girls

There are 30 boys in the class, and 28 of them passed. All the girls passed. A total of 95% of the students passed the course. How many girls are in the class?

Final Answer:

d =  10

Step-by-step explanation:


0.95(d+30) = 28+d

0.95·(d+30) = 28+d

0.05d = 0.5


d = 0.5/0.05 = 10

d = 10

Our simple equation calculator calculates it.



Help us improve! If you spot a mistake, please let let us know. Thank you!







Tips for related online calculators
Our percentage calculator will help you quickly and easily solve a variety of common percentage-related problems.
Do you have a linear equation or system of equations and are looking for a solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

algebrabasic operations and conceptsGrade of the word problem

Related math problems and questions: