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The students in three classes are in the ratio of 2:3:4. If 40 students are added in each clas, the ratio becomes 4:5:6. Find the total number of students in all the three classes is : |
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Answer» 270 3x + 40 = 5y ...(ii) 4x + 40 = 6y ...(III) Therefore 2x = 40 `IMPLIES x = 20` Hence, total number of students = 2x + 3x + 4x = 9x `9 xx 20 = 180 Alternatively It can be solved through options also. |
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