Hello!
To determine what time she has to take out the cookies, we can add 45 minutes to the time she puts them into the oven, which is 5:30 p.m. Remember that 1 hour is 60 minutes.
5:30 + 0:45 = 5:75
Since one hour is equal to 60 minutes, we have to move the extra minutes to the next hour, which is 6 p.m.
Therefore, Layla should take the cupcakes out at 6:15 p.m.