Answer:
5,209
Step-by-step explanation:
If 4% are defective, you need 5,000 to equal 96% of pills produced (100%-4%). Knowing this, we can do 5,000/96 to get 1%, which is ~52. ~52*4= 208.333. We can round this up to 209 to safely say they need to make 5,209 pills do deliver 5,000 effective pills.
