Day of the week a given number of days later in the same year (count days, take remainder by 7)

This type of question, asked 3 times: 21 Jul 2023 S3, 24 Jul 2023 S3, 19 Sep 2025 S2. All 3 questions below, oldest first.

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Question 1
21 Jul 2023 S3
20 $If today is Friday, which day will it be after 72 days?$
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Question 2
24 Jul 2023 S3
3 $The fifteenth day of the month of June is a Saturday. What will be the last day of the next month which has 31 days?$
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Question 3
19 Sep 2025 S2
24 $If the 7th day of a month is three days earlier than Friday, What day will it be on the 20th day of the month?$
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Question 1