In a class of 50 students, there are 23 girls. What is the percentage of boys in the class?
23%
28%
42%
54%
Number of boys = 50 - 23 = 27 Percentage of boys =2750×100=54%
There are 60 students in a class among which 30 are boys. In another class, there are 50 students among which 25 of them are boys. If one from each class is selected, What is the probability of both being girls?
In a class of 50 students there are 30 girls. The ratio of boys to the girls is: