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    Question

    A person "P" allocates their monthly income as follows:

    First, 25% is spent on education. From the remaining amount, 40% is used for food. After that, 20% of what remains is spent on groceries. The gap between the expenses on food and groceries is Rs. 4200. Determine P’s total monthly income.
    A 57000 Correct Answer Incorrect Answer
    B 20000 Correct Answer Incorrect Answer
    C 60000 Correct Answer Incorrect Answer
    D 96000 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ;
    Education = 25%
    Remaining = 75%
    Food = 40% of 75% = 30% of total
    Left after food = 75% – 30% = 45%
    Groceries = 20% of 45% = 9% of total
    Difference = Food – Groceries = (30% – 9%) = 21%
    If 21% = Rs. 4200
    Total income = 4200 × (100 / 21) = Rs. 20000

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