Answer:
Complete solution is given in the images attached below for better demonstration
Oh, I remember this one. Here's this if you need it, if it doesn't help then let me know.
I think the answer is 263.52. Hope it's right!
1 hour = 60 minutes/300 minutes (set up a ratio problem)
5 hours
Solution
For this case we can do the following:


And then if we multiply we got: