Answer:
.214 if it is to 3 decimal places.
Answer: A. because it is the only one that makes sense, the unit rate is where the second quantity is one unit: etc. 1 minute=60 seconds1 hour=60 minutes (or) 3600 seconds1 day=24 hours (or) 1440 minutes.
You write .63/1 or (63/100) but since you can't really do anything with that, you move the decimals so that it's a whole number but you have to move the decimal the same amount of times with the one. So since you move 2 times so that it's 63, you do the same with the one=100. So the answer is 63/100