Answer:
80 kilometers
Explanation:
Since the number of miles and number of km is over one hour, the only thing you need to worry about it the number of miles in a kilometer (the numerator).
1 mile is approximately 1.60934 kilometers, so to find how many kilometers are in 50 miles, you would multiply 1.60934 by 50.
Since 50 miles is rounded to the nearest whole number, I expect that the kilometers should be given in the nearest whole number, so the final answer is 80 kilometers.