Answer:
No. You need 32 days to meet the additional order, which is slightly more than a month (30 days).
Step-by-step explanation:
With current manufacture at 50 skis/day,
and total capacity at 60 skis/day,
Excess capacity = 60 - 50 = 10 skis/day
This means in a month of 30 days (since you manufacture 7 days a week, all round), excess capacity can produce a total of 10 * 30 = 300 skis.
Therefore, you will not be able to meet the additional order to supply a second retail store with 320 skis in one month from today.
The number of days required to meet the order of 320 skis =
= 32 days.