By 1PM Shani had already shoveled 2 driveways, and by 6PM that day, the number was up to 7.
A) Find Shani's average shoveling rate, in number of driveways per hour.
B) Find Shani's shoveling rate, in hours per driveway.
in 5 hours , (from 1:00pm to 6:00pm), he did 5 driveways. (7-2)
so he does 1 driveway per hour
or
he takes 1 hour per driveway.
The number of proper subsets of set A are?
When A= {1,3,5,7}
To find Shani's average shoveling rate in number of driveways per hour, we need to determine how many driveways Shani shoveled in total during the time from 1 PM to 6 PM. We can then divide that number by the number of hours.
To find the total number of driveways shoveled, we subtract the initial number of driveways shoveled (2) from the final number of driveways shoveled (7):
Total number of driveways shoveled = 7 - 2 = 5 driveways.
Since Shani shoveled these 5 driveways over a duration of 5 hours (from 1 PM to 6 PM), the average shoveling rate in number of driveways per hour is:
Average shoveling rate = Total number of driveways shoveled / Duration in hours = 5 driveways / 5 hours = 1 driveway per hour.
To find Shani's shoveling rate in hours per driveway, we need to determine the amount of time it took Shani to shovel each driveway. We can do this by dividing the duration in hours by the number of driveways shoveled.
Since Shani shoveled 5 driveways over a duration of 5 hours, the shoveling rate in hours per driveway is:
Shoveling rate = Duration in hours / Total number of driveways shoveled = 5 hours / 5 driveways = 1 hour per driveway.