Given:
One-ninth of the parts tooled by a machine are rejected.
Required:
To find number of parts must be tooled to ensure 4800 acceptable ones.
Explanation:
One-ninth of the parts tooled by a machine are rejected.
That means 8 out of 9 parts made will be acceptable.
So the number of parts to be tooled to ensure 4800 acceptable ones is,
[tex]\begin{gathered} =\frac{9}{8}\times4800 \\ \\ =5400 \end{gathered}[/tex]Final Answer:
5400 parts must be tooled to ensure 4800 acceptable ones.
