SOLUTION: 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?
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Question 1066205: 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? Found 2 solutions by Boreal, ikleyn:Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! total number of students that day=1620
total number of students enrolled in school is x
10% of x were absent
Therefore, 90% of the students in the school=1620
Divide 1620 by 0.9 to get 1800.
10% absent, which is what they want is 10% of 1800, or 180. ANSWER
You may set it up as a proportion, too.
.9/1620=1/x and cross multiply.