Answer:
18 hours
Explanation:
There are 24 hours in a day and we have 5 weekdays per week.
15% of 24 hours
15/100×24
0.15×24
=3.6 hours
Mrs Miller spends 3.6 hours of each weekday traveling in her car.
There are 5 weekdays in a week to include: Monday, Tuesday, Wednesday, Thursday and Friday.
If she spends 3.6 hours per weekday
Then,
During the week, she will spend
3.6 hours× 5 weekdays
=18 hours
She will spend 18 hours per week traveling in her car.