(Rational expression word probelm) A sample of 125 shows

Question

A sample of 125 shows 4 defective bulbs.  How many defective bulbs would you expect in a shipment of 1000 bulbs?

Answer 1

Hi Geoff,

 

Create a proportion

 

4/125 = x/1000

 

then cross multiply

 

125x = 4000

 

x = 32

 

Hope this helps