The students in three classes are in the ratio 2 : 3 : 5. If 20 students are increased in eachclass, the ratio changes to 4 : 5 : 7. Originally the total number of students was :

The students in three classes are in the ratio 2 : 3 : 5. If 20 studen

1.	The students in three classes are in the ratio 2 : 3 : 5. If 20 students are increased in each class, the ratio changes to 4 : 5 : 7. Originally the total number of students was :
A.	50
B.	90
C.	100
D.	150
Answer» D. 150

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The students in three classes are in the ratio 2 : 3 : 5. If 20 students are increased in eachclass, the ratio changes to 4 : 5 : 7. Originally the total number of students was :

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The students in three classes are in the ratio 2 : 3 : 5. If 20 students are increased in each
class, the ratio changes to 4 : 5 : 7. Originally the total number of students was :