The students of three classes are in the ratio 4 : 6 : 9. If 12 students are increased in each class the ratio changes to 7 : 9 : 12. Then the total number of students in the three classes before the increase is = ?

The students of three classes are in the ratio 4 : 6 : 9. If 12 studen

1.	The students of three classes are in the ratio 4 : 6 : 9. If 12 students are increased in each class the ratio changes to 7 : 9 : 12. Then the total number of students in the three classes before the increase is = ?
A.	5
B.	6
C.	00
D.	14
Answer» C. 00