(7a). Ford Fusion model S can be ordered with these specifications: 8 types of c
ID: 281094 • Letter: #
Question
(7a). Ford Fusion model S can be ordered with these specifications: 8 types of colors 1 type of engine 4 types of wheel and with or without each of these options: 1. floor mats 2. rear inflatable seat belt 3. trunk cargo net 4. molded splash guards 5. rear bumper protector 6 side window deflector 7. roof rack and 8. road side assistance kit. In how many different combinations of these can we order the Ford Fusion model S? (For example, ordering the car with floor mats would be different from ordering it without (b). On average, $7,000 is added to an ATM each week. By tracking the the level of money throughout the week, the average amount in the ATM is seen to be $4,000. What is the average time (in days) a dollar spends in the ATM?Explanation / Answer
Answer 7a. Total color types 8, hence option of choice of order is 8.
Total wheel types 4, hence option of choice of order is 4.
Engine type 1, hence option of choice of order is 1
With and without option is 2, hence option of choice of order is 2
Total option available with all combination is 8X4X1X2 = 64, hence total choice available for order is 64.
Answer 7b:
The average number of dollars in the ATM (N) = 4000
The average number of dollars arriving to the ATM per week (n) = 7000
The average time a dollar spends in the ATM (T) = N/n
= 4000/7000
=0.571 weeks
= (0.571 X 7) days (as 1 week = 7 days)
= 4 days
Therefore,the average time a dollar spends in the ATM is 4 days
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