Posted by Anonymous on .
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?

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

Math 
Ms. Sue,
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 
Math 
Anonymous,
thank you

Math 
Ms. Sue,
You're welcome.