One day, 10% of the students enrolled in the school were absent. There were 1,620 students present on that day. How many students were absent?

Question

(Hint: Figure what percent of the students were present.)

Answer 1

Here's another way:

10% were absent, so 100% - 10% = 90% were present.

1620 is 90% of what? 1620 = 0.9x -> x = 1620/0.9 = 1800 total enrolled.

So no. absent is 1800 - 1620 = 180

Answer 2

Were absent 1620·10/90 = 180 students.