Question

90% of students at a university use a backpack, while the rest do not. Of all the students, 50% carry their laptops with them and 5% carry neither a backpack nor laptop. What percentage of students carry their laptops and use a backpack?

Answer 1

90% of 100 = 90
50% of 90 = 45
5% of 45 = 2.25
The answer is 2.25