Math
posted by Anonymous .
Julio works as a quality control expert in a beverage
factory. The assembly line that he monitors produces about 20,000 bottles in a24hour period. Julio samples about 120 bottles an hour and rejects the line if he finds more than 1/50 of the sample to be defective. About how many defective
bottles should Julio allow before rejecting the entire line?
I think this is a division problem and how would I start this?

1/50 * 120 = 120/50 = 2 2/5
He should reject the line when he finds 3 defective bottles. 
so it is multiplication problem?

Yes. In this kind of construction, a fraction of something is a multiplication problem.
Think of 1/2 of 10. You know it's 5.
1/2 * 10 = 10/2 = 5 
thank you

You're welcome.