8th Class Mathematics Comparing Quantities Question Bank Comparing Queantities

  • question_answer Salaries of Ravi and Sumit are in the ratio 2 : 3. If the salary of each is increased by Rs. 4000. The new ratio becomes 40: 57. What is Sumit's increased salary?

    A)  Rs. 17000                    

    B)  Rs. 20,000

    C)  Rs. 25,500                   

    D)  Rs. 38,000

    Correct Answer: D

    Solution :

    (d): Let their salaries be \[2x,3x\] \[\frac{2x+4000}{3x+4000}=\frac{40}{57}\] \[\Rightarrow 114x+4000\times 57=120x+4000\times 40\] \[\Rightarrow 4000(57-40)=6x\] \[\Rightarrow \frac{4000\times 17}{2}=3x\] \[\Rightarrow 34000=3x\]             \[\therefore 3x+4000=38000/-\]


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