Answer:
The number of student that chose lion = 2a = 2 × 39 = 78
Explanation:
The total student that took part in the survey was 273. Therefore,
Total number of student that took part in the survey = 273
number of student that chose the tiger to be the new school mascot = a
number of student that chose the bulldog to be the new school mascot = 4a
number of student that chose the Lion to be the new school mascot = 2a
Therefore,
a + 4a + 2a = 273
sum all the coefficient of a
7a = 273
divide both sides by 7
a = 273/7
a = 39
The number of student that chose lion = 2a = 2 × 39 = 78