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    Question

    The incomes of Abhinav and Bishnu are in the ratio 4:3,

    and their savings are in the ratio 3:1. Both spend Rs. 5,000 each. Determine the difference between their average incomes and their average savings.
    A Rs. 5,600 Correct Answer Incorrect Answer
    B Rs. 2,000 Correct Answer Incorrect Answer
    C Rs. 5,000 Correct Answer Incorrect Answer
    D Rs. 5,256 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the incomes of 'Abhinav' and 'Bishnu' be Rs. '4p' and Rs. '3p', respectively. ATQ; {(4p - 5000)/(3p - 5000)} = (3/1) 4p - 5000 = 9p - 15000 Or, 10000 = 5p So, p = 2000 So, average incomes of 'Abhinav' and 'Bishnu' = {(4p + 3p)/2} = 3.5p = 3.5 × 2000 = Rs. 7,000 Savings of 'Abhinav' = 4p - 5000 = Rs. 3,000 Savings of 'Bishnu' = 3p - 5000 = Rs. 1,000 So, their average savings = {(3000 + 1000)/2} = Rs. 2,000 Required difference = 7000 - 2000 = Rs. 5,000 

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