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A is r% more or less than B: by what percent is B less or more than A (r/(100 + r))

This type of question, asked 6 times: 14 Jul 2023 S1, 19 Jul 2023 S4, 26 Jul 2023 S2, 27 Jul 2023 S1, 26 Sep 2024 S3, 23 Sep 2025 S2. All 6 questions below, oldest first.

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  1. Question 1

    14 Jul 2023 S1

    51
    If A is 95% of B, then what per cent of A is B?

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  2. Question 2

    19 Jul 2023 S4

    74
    If the price of petrol increased by 7%7\%, then by what percentage should the consumption be decreased by the consumer, if the expenditure on petrol remains unchanged?

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  3. Question 3

    26 Jul 2023 S2

    71
    If, in a competitive exam, the marks obtained by Sam are 19%19\% less than those of Peter, then the marks obtained by Peter are how much percentage more than the marks obtained by Sam? (Correct to two decimal places)

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  4. Question 4

    27 Jul 2023 S1

    52
    If the price of petrol is increased by 81%, by what percentage should the consumption of petrol be decreased by the consumer if the expenditure on petrol remains unchanged? (Correct to two decimal places)

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  5. Question 5

    26 Sep 2024 S3

    51
    Ram’s income is 2.5%2.5\% more than Shyam’s income. By what percentage is Shyam’s income less than Ram’s income?

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  6. Question 6

    23 Sep 2025 S2

    59
    A value is increased by 30% and then decreased by an unknown percentage to return to the original value. What is the percentage decrease required?

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