Answer: 5:8
Explanation:
to reduce 250:400, simply start with common factors. Right now, it looks like both numbers have 10 in common, so we can divide 10 from both numbers, which will result in 25:40.
We still need to simplify, and now it looks like both numbers have 5 in common, so we can divide 5 from both numbers, resulting in 5:8.
I hope this helps!