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Junior Regional Olympiad - FBH 2014 Grade 6 Problem 2

Source:

October 3, 2018
Fractions

Problem Statement

In one class in the school, number of abscent students is 16\frac{1}{6} of number of students who were present. When teacher sent one student to bring chalk, number of abscent students was 15\frac{1}{5} of number of students who were present. How many students are in that class?