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Two successive discounts: single equivalent discount

The same question, asked 5 times: 21 Jul 2023 S3*, 10 Sep 2024 S2*, 13 Sep 2024 S1*, 13 Sep 2024 S2*, 17 Sep 2024 S2. Every wording below, oldest first.

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  1. Question 1

    21 Jul 2023 S3

    64
    What is the equivalent discount percentage corresponding to two successive discounts of 9% and 17%?

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  2. Question 2

    10 Sep 2024 S2

    64
    Two successive discounts of 40%40\% and 30%30\% are equal to a single discount of:

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  3. Question 3

    13 Sep 2024 S1

    64
    If the successive discount by 10%10\%,15%15\%, then the single equivalent rate of discount is:

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  4. Question 4

    13 Sep 2024 S2

    54
    A discount series of 10% and 16% on an invoice is the same as a single discount of:

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  5. Question 5

    17 Sep 2024 S2

    74
    A shopkeeper allows 40% discount on his goods. He further gives 20% discount. What is the single discount equivalent to these two successive discounts?

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