Homework Help: Math

Posted by Anonymous on Friday, July 31, 2009 at 9:06pm.

Julio works as a quality control expert in a beverage
factory. The assembly line that he monitors produces about 20,000 bottles in a24-hour 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, Friday, July 31, 2009 at 9:09pm
1/50 * 120 = 120/50 = 2 2/5

He should reject the line when he finds 3 defective bottles.
Math - Anonymous, Friday, July 31, 2009 at 9:10pm
so it is multiplication problem?
Math - Ms. Sue, Friday, July 31, 2009 at 9:13pm
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, Friday, July 31, 2009 at 9:23pm
thank you
Math - Ms. Sue, Friday, July 31, 2009 at 9:47pm
You're welcome.

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