Q.46 The student ratio in arts, commerce, and science was 6:4:3 respectively. If the students in arts, commerce, and science were increased by 10%, 30%, and 15% respectively, what is the new ratio?
[A] 69:104:132 [B] 132:104:69 [C] 104: 132: 69 [D] None of the above
Answers
Answer:
[B] 132:104:69
Step-by-step explanation:
Let the number students in arts, commerce and science be 6y, 4y and 3y respectively.
The increase in number of arts students = 10% of 6y
Total number of arts students after the increment = 6y + 10% of 6 y
= 6.6y
Similarly,
Total number of commerce students after the increment = 4y + 30% of 4y
= 5.2y
Total number of science students after the increment = 3y + 15% of 3y]
= 3.45y
Ratio of students in art, commerce and science = 6.6y:5.2y:3.45y
Ratio of students in art, commerce and science = 6.6:5.2:3.45
= 66:52:34.5
on multiplying each number by 2, the ratio become 132:104:69