your school has 3 grade 4 classes: 4A, 4B and 4C. The table shows the total number of students in each class and the fraction of the class that expected to participate in the fundraiser by either selling pencils or walking in the walkathon. A total of 50 grade 4 students will participate in the fundraiser. what fraction of grade 4 B students will participate? show how you arrived at your answer.​