Question

Ln a class, 60 % of students passed in mathematics, 50 % of students passed in science, 10% of students neither passed mathematics nor science and 18 students passed both. The total number of students in the class is

Answer 1

Answer:

90

Step-by-step explanation:

40 percent of students  failed science  passed maths since 10 percent failed both and 50 percent passed science and  30 percent who failed science passed maths so 20 percent of students passed both so 20 percent is equal to 18 so 100 percent or the whole classroom is equal to 90 students