Answer:
a.) retail = 6,019
b.) distributor= 6,083
c.) manufacturer= 6,142
d.) supplier = 6,217
Explanation:
a. How many watches should the retailer order to provide 6,000 watches to consumers?

Rounding up to the next whole unit:
Nretail = 6,019
b. How many watches should the distributor order based on the retailer's order?

Rounding up to the next whole unit:
Ndistributor= 6,083
c. How many watches should the manufacturer order based on the distributor's order?

Rounding up to the next whole unit:
Nmanufacturer= 6,142
d. How many watches should the supplier order based on the manufacturer's order?

Rounding up to the next whole unit:
Nsupplier = 6,217