Multiple Choice Questions on The students in 3 classes are in the ratio 3 4 5 If 20 students added in each class the ratio become........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The students in 3 classes are in the ratio 3 4 5 If 20 students added in each class the ratio become...........

Quantitative Aptitude ( CCS) Ratio, Proportion
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    The students in 3 classes are in the ratio 3:4:5.If 20 students added in each class, the ratio becomes 5:6:7.Find the total no of students in all the 3 classes now ?

     

    160
     

    Incorrect Answer

    170
     

    Incorrect Answer

    180
     

    Correct Answer

    200

    Incorrect Answer
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    Explanation:

    5x+6x+7x+ 18x = 180
    X=10
    Check 3x+4x+5x = 12x = 120
    120+60 = 180

    By: Sandeep Dubey
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