Answer:
b. It has increased by 20 percent
Step-by-step explanation:
The Dulac Box plant produces 500 cypress packing boxes in two-10 hour shifts.
Means the plant produces 250 boxes in each 10 hour shift.
And per hour it produces: [tex]\frac{250}{10}=25[/tex] boxes
Due to higher demand, Dulac has decided to operate three eight-hour shifts instead. Dulac is now able to produce 600 boxes per day.
Means the plant produces 200 boxes in each 8 hour shift.
And per hour now it produces: [tex]\frac{200}{8}=25[/tex] boxes
Production rate is = [tex]\frac{600-500}{500}\times100=20[/tex]%
Hence, the answer is : b. It has increased by 20 percent
