PART A is 28 hours and PART B is  16800 minutes
What is an equation?
'An equation is a mathematical statement with an 'equal to' symbol between two expressions that have equal values.'
According to the given problem,
Delia Brushes her teeth = Â 1/6 hour
For Part A,
Total Week= 1 week
Total number of  days in a week= 7 days
Total number of hours in a day= 24 hours
Total number of hours in a week= 24Ă— 7 hours
Total number of hours in a  week=  168 hours
Number of hours that Delia brushes her teeth = Â Ă— 168 hours
Number of hours that Delia brushes her teeth = 28 hours
For Part B,
Total number of  days in a week= 7 days
Total number of hours in a  week=  168 hours
Total number of minutes in a  week=  168 × 60
Total number of hours in a  week=  100800 Minutes
Number of minutes that Delia brushes her teeth = Ă— 100800
Number of hours that Delia brushes her teeth = 16800 minutes
Hence, we can conclude that Delia brushes her teeth for 28 hours and 16800 minutes.
Learn more about equations here: https://brainly.com/question/21105092
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