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  1. The ratio of the incomes of Chetan and Dinesh is 3:4. The ratio of their expenditures is 5:7. If each of them saves Rs.200, find the incomes of both?
    2. A.
    Rs.1500, Rs.2000
    B.
    Rs.600, Rs.800
    C.
    Rs.900, Rs.1200
    D.
    Rs.1800, Rs.2400
    E.
    None of these

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    Answer : Option E

    Explanation :

    The savings of Chetan and Dinesh are 3x - 5y and 4x - 7y respectively.
    3x - 5y = 200 --- (1)
    4x - 7y = 200 --- (2)
    Multiplying (1) by 7 and (2) by 5 and subtracting the resultant equation (2) from resultant equation (1), we get x = 400.
    The incomes of Chetan and Dinesh are 3x = Rs.1200 and 4x = Rs.1600 respectively.

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