Problem:
NASA's Perseverance Rover was launched on July . After traveling miles, it landed on Mars in Jezero Crater about months later. Which of the following is closest to the Rover's average interplanetary speed in miles per hour?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
We can round the distance up to miles. We can also approximate months as days. This means that the Rover traveled miles per day. Dividing this by to get the speed in miles per hour yields , which is close to .
Thus, is the correct answer.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions