A year on Mars is 686 Earth Days. (1) Which is longer, a year on Mars or a year on Earth? (2)By how many weeks is it longer? Submit two answers. Please explain how you got the answers. My 1st answer was Mars the 2nd answer I 82 1/2 weeks. Please help
How ever did you get 82 1/2 weeks?
686 days is 321 days longer than the 365-day earth year.
321 days = 45 6/7 weeks
When you post a question, it is always helpful to show your calculations, so we can figure out where you went wrong, if you did.
To determine which is longer, a year on Mars or a year on Earth, we need to compare the number of days in each year.
(1) A year on Mars is 686 Earth days, whereas a year on Earth is 365 Earth days. Since 686 is greater than 365, a year on Mars is longer than a year on Earth.
(2) To calculate how many weeks longer a Mars year is compared to an Earth year, we need to convert the number of days into weeks for both planets.
On Earth, there are 7 days in a week, so we divide the number of Earth days by 7 to get the number of Earth weeks. Thus, 365 Earth days is equal to 52 weeks and 1 day.
On Mars, using the same calculation, we divide the number of Mars days (686) by 7 to find the number of Mars weeks. This gives us 98 weeks.
Now we can determine the difference in weeks between a year on Mars and a year on Earth by subtracting the number of Earth weeks from the number of Mars weeks.
98 (Mars weeks) - 52 (Earth weeks) = 46 weeks.
Therefore, the first answer is correct: a year on Mars is longer than a year on Earth. The second answer, however, is incorrect. The correct answer is that a Mars year is 46 weeks longer than an Earth year.