For the past month, Ms. Smith recorded the number of days she went to work each week and the number of gas stations she drove by during those days. How many gas stations does she drive by each day?
To determine how many gas stations Ms. Smith drives by each day, we need to find the average number of gas stations she drives by in a week and then divide it by the number of days she worked that week.
Let's assume Ms. Smith worked 5 days a week for the past month.
Total number of gas stations she drove by in the past month = 30 (days) * x (number of gas stations she drove by each day)
Total number of days she worked in the past month = 5 (days/week) * 4 (weeks) = 20 days
Average number of gas stations she drives by per week = Total number of gas stations she drove by in the past month / Total number of weeks
x = Total number of gas stations she drove by in the past month / Total number of days she worked in the past month
x = 30 (days) * x / 20 (days)
x = 1.5
Therefore, Ms. Smith drives by 1.5 gas stations each day on average. Since she can't drive by half of a gas station, we can round it up to 2 gas stations per day.