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vivek

· started a discussion

· 1 Months ago

short method (Question: 232969.0 )

3k increase in each ratio,
3k = 12, k= 4
(4+6+9)k = 76

Question:
The students in 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:
Options:
A) 114
B) 76
C) 95
D) 100
Solution:

Ans: (b)

Jhon Snow

· commented

· 1 Months ago

thanks
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