The table below shows the cost for a popular cruise. There is a booking fee plus a cost per day. Help Video
Number of Days Cost ($)
4 675
5 800
6 925
(10 points)
The cost per day is $
The booking fee is $
To find the cost per day, we can calculate the difference in cost between each option and divide it by the number of days.
Cost per day for 4 days: ($675 - booking fee) / 4 = $168.75 / day
Cost per day for 5 days: ($800 - booking fee) / 5 = $160 / day
Cost per day for 6 days: ($925 - booking fee) / 6 = $154.17 / day
Looking at the cost per day values, we can see that the cost per day is usually decreasing as the number of days increases. This may be due to the booking fee being a larger portion of the overall cost for shorter cruises.
To calculate the booking fee, we can notice that the booking fee would be the difference between the total cost and the cost per day multiplied by the number of days.
For the 4-day cruise:
675 = Booking fee + 4 * $168.75
Booking fee = $675 - 4 * $168.75
Booking fee = $675 - $675
Booking fee = $0
For the 5-day cruise:
800 = Booking fee + 5 * $160
Booking fee = $800 - 5 * $160
Booking fee = $800 - $800
Booking fee = $0
For the 6-day cruise:
925 = Booking fee + 6 * $154.17
Booking fee = $925 - 6 * $154.17
Booking fee = $925 - $925
Booking fee = $0
Therefore, the booking fee is $0 for each cruise option.