Answer:
6:06
Step-by-step explanation:
Lets start by rewriting "twenty-one minutes to seven" into digital clock form, so let's write 6:39. Now, it's easy to see that adding 11 hours will get you to 5:39, and adding 27 minutes will get you to 5:66, but there's not 66 minutes in an hour, so we have to convert 60 of the 66 minutes into an hour. So the final time is 6:06
