Question

A packaging plant uses a machine that can bottle 30 fluid ounces of shampoo in 12 seconds.How many fluid ounces of shampoo can be bottled per second

Answer 1

we have that

if the machine can bottle 30 fluid ounces of shampoo in -----------> 12 seconds
X fluid ounces of shampoo in-----------------------------------------------> 1 second
X=30/12=2.5 (I apply a rule of three)

the answer is 2.5 fluid ounces of shampoo