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Age ratios at two points in time: find an age or a future ratio

This type of question, asked 5 times: 14 Jul 2023 S3, 14 Jul 2023 S4, 18 Sep 2024 S2, 23 Sep 2024 S2, 23 Sep 2024 S3. All 5 questions below, oldest first.

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  1. Question 1

    14 Jul 2023 S3

    64
    The current ages of Sudhir and Ashish are in the ratio 5:75 : 7. Twelve years ago, the ratio of their ages was 1:21 : 2. What will be the age of Sudhir after five years from now?

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  2. Question 2

    14 Jul 2023 S4

    75
    The ages of Gyanendra and Arbind are in the ratio 6:56 : 5. If the sum of their ages is 55 years, then what will be the ratio of their ages after seven years from now?

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  3. Question 3

    18 Sep 2024 S2

    72
    The present ages (in years) of A and B are in the ratio of 3:43 : 4. Five years back, the ratio of their ages was 2:32 : 3. What is the present age (in years) of A?

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  4. Question 4

    23 Sep 2024 S2

    62
    Hema is 20 years old and her sister Neha is 30 years old. How many years ago were their ages in the ratio of 3 : 5?

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  5. Question 5

    23 Sep 2024 S3

    62
    The ratio of the ages of A and B, 3 years ago, was 5 : 7. The ratio of their ages, 13 years from now, will be 9 : 11. If the present age of C is 11 years less than that of B, then the present age of C, in years, is:

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