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Three successive percentage changes: net percent change

The same question, asked 2 times: 9 Sep 2024 S3*, 18 Sep 2024 S3. Every wording below, oldest first.

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  1. Question 1

    9 Sep 2024 S3

    51
    A number is first increased by 12%12\% and then increased by 23%23\%. The number, so obtained, is now decreased by 34%34\%. What is the net increase or decrease percent in the original number (nearest to an integer)?

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  2. Question 2

    18 Sep 2024 S3

    56
    An investor, invested ₹2,00,000 in shares. The shares rose by 18% on the first day, fell by 15% on the second day, and then fell by 3% on the third day. What is the net percentage increase or decrease in the value of the investor's shares? (Rounded up to one decimal place)

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