Answer:
D last one
Step-by-step explanation:
Unit rate - production in one second
20 bottles - 1 min
1 min - 60 seconds
20 bottles - 60 seconds
20 : 60 : : x : 1
20 = 60x
x = 20 / 60
x = 1/3
1/3 rd bottle is produced in one second
Hope helps!
