Convert 21 days to weeks.
Understand the Problem
The question is asking to convert 21 days into weeks. This involves knowing that one week equals seven days and performing the division to find the equivalent number of weeks.
Answer
21 days = 3 weeks
Answer for screen readers
21 days is equivalent to 3 weeks.
Steps to Solve
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Identify the conversion factor To convert days into weeks, we need to know that 1 week is equal to 7 days.
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Set up the division We will divide the total number of days by the number of days in a week. So, we set up the equation: $$ \text{weeks} = \frac{\text{days}}{\text{days per week}} $$ In our case, it becomes: $$ \text{weeks} = \frac{21 \text{ days}}{7 \text{ days/week}} $$
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Perform the calculation Now we will carry out the division: $$ \text{weeks} = \frac{21}{7} = 3 $$
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State the final answer Thus, we conclude that 21 days is equivalent to 3 weeks.
21 days is equivalent to 3 weeks.
More Information
3 weeks is the same as 21 days, which means if you count days, you'll find that three groups of 7 days each sum up to 21 days. This is a standard conversion that can be used in various calculations involving time.
Tips
- A common mistake is to forget the conversion factor and either multiply or use the wrong number of days per week. Always remember that 1 week = 7 days.
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