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IMSO 2016 — Mathematics — Short Answer Question 6

IMSO Maths · IMSO 2016 — Mathematics — Short Answer

Question 6

Class A and Class B have the same number of students.
- The number of students in Class A who took part in a mathematics competition is one third of the students in Class B who did not take part.
- The number of students in Class B who took part in a mathematics competition is one fifth of the students in Class A who did not take part.
Find the ratio of the number of students who did not take part in the competition in Class A to those who also did not take part in Class B.