3 weeks (21 days) is about ¾ of one month (28 to 31 days).
In weeks of 7 days, three months can be 12 weeks and 5 or 6 days, or 13 weeks, or 13 weeks and 1 day. There are at least 4 weeks (28 days) in every month, but the number of days varies. Some months have 30 days (April, June, September, November) and some have 31 days (January, March, May, July, August, October, December). These months can be arranged in either 5 or 6 calendar weeks, with at least three 7-day weeks in the middle. February, with 28 days (29 in leap years), can be 4 or 5 calendar weeks. Similarly, a period of three months can be either 89, 90, 91, or 92 days, arranged in at least 12 weeks of 7 days (84) or 13 weeks (91 days), with the largest possible number of separate calendar weeks being 15.
One week is 7 days, so 21 weeks is 147 days.
17 weeks and one day.
40,215.21
There are 70 days in 10 weeks. There are 7 days in one week there for proving that 7*10= 70
3 weeks (21 days) is about ¾ of one month (28 to 31 days).
Thirty-one weeks is seven and one quarter months. It is not seven and three-quarters months because 31 weeks X 7 days in a week / 30 days in a month = about 7.25.
In weeks of 7 days, three months can be 12 weeks and 5 or 6 days, or 13 weeks, or 13 weeks and 1 day. There are at least 4 weeks (28 days) in every month, but the number of days varies. Some months have 30 days (April, June, September, November) and some have 31 days (January, March, May, July, August, October, December). These months can be arranged in either 5 or 6 calendar weeks, with at least three 7-day weeks in the middle. February, with 28 days (29 in leap years), can be 4 or 5 calendar weeks. Similarly, a period of three months can be either 89, 90, 91, or 92 days, arranged in at least 12 weeks of 7 days (84) or 13 weeks (91 days), with the largest possible number of separate calendar weeks being 15.
Different months have different lengths - for example, January has 31 days, and June has 30. February has 28 (outside of leap years), which means it is exactly four weeks long. Obviously a month that is 30 days will be four weeks and two days, and one that is 31 days long will be four weeks and three days - or a little over four and a half weeks.
142 weeks and 6 days.
There are 3 weeks in 21 days
It is 9 weeks and one day.
One week is 7 days, so 21 weeks is 147 days.
7 days in one week hence 70 days = 10 weeks.
Five hundred and tweny one million = 521,000,000
17 weeks and one day.