Question

sun decreases by 30 seconds every day. At what time will the sun set on November 26
6 a.m., the next day, at what time would the temperature be 2°C below zero?
11. Suppose the sunset occurs at 7:15 p.m. on July 15 in Delhi and the setting time of the
6 p.m. is 12°C above zero. If it decreases
What will be the temperature at 6 a.m.?
12.​

Answer 1

Given: The sunset occurs at 7: 15 p.m, the setting time of sun decreases by 30 second everyday.

To find: At what time will the sun set on November 26 in Delhi?

Solution:

Now we have given that sunset occurs at 7: 15 p.m, the setting time of sun decreases by 30 second everyday.

Let the number of days be x.

Now number of days from July 16 to November 26 as calculations will be:

                 x = 15 (jul) + 31 (aug) + 30 (sep) + 31 (oct) + 26 (nov)

                 x = 133 days

Now we have given that sunset time decreases by 30s everyday, so:

The change will be:

                  133 × (30)

                  3990 seconds

                 66.5 minutes

So on 26th November, sun will set at:

                 Sunset time = 7:15 - 66.5

                 Sunset time = 6:08:30 pm

Answer:

            Therefore, sun will set at 6:08:30 pm on 26th November.