Ahmad School had 795 students and Tim School had 20% more students. When an equal number of students left each school, the ratio of the students in Tim School to that in Ahmad School became 2 : 1. How many students were there in both schools in the end?

	Ahmad School	Tim School	Difference
Before	795		159
Change	- ?	- ?
After	2 u	1 u	1 u

Since an equal number of students left each school, the difference in the number of students at first and in the end between the 2 schools remains the same.  Make the difference between the number of students in Ahmad School and Tim School at first and in the end the same. 

Difference between the number of students in both schools at first
= 20% x 795
= ²⁰₁₀₀ x 795
= 159

Difference between the number of students in both schools in the end
= 2 u - 1 u
= 1 u

1 u = 159

Total number of students in both schools in the end
= 2 u + 1 u
= 3 u
= 3 x 159
= 477

Answer(s): 477