There are 1800 students in a school. 800 chose football, 750 chose basketball and the remaining did not choose any game. A student can choose only one game. Find the ratio of the number of students who chose football to the number of students who did not choose any game.
16:5
Total number of students in the school = 1800
Number of students who chose football = 800
Number of students who chose basketball = 750
Number of students who did not choose any game = 1800 - 800 - 750 = 1800 - 1550 = 250
The ratio of the number of students who chose football to the number of students who did not choose any game = 800250
= 165
Therefore, the required ratio is 16:5.