Question

A quality control process results in 30 parts in every 500 being rejected as below standard express this failure rate as a percentage

Answer 1

Answer:

6% of parts are rejected as below standard.

Step-by-step explanation:

Given:

Total Number of parts = 500

Number of parts rejected as below standard = 30

We need to express given condition in percentage.

Percentage of total parts reject as below standard

=  $\frac{no.\:of\:parts\:rejected}{total\:part}\times100$

= $\frac{30}{500}\times100$

= $\frac{30}{5}$

= 6 %

Therefore, 6% of parts are rejected as below standard.

Answer 2

6% is the percentage of failure or rejects produced by the company.

Given:

A quality control process results in 30 parts in every 500 being rejected.

To find:

Percentage of the failure rate = ?

Solution:

The number of parts being rejected in the quality control process is 30

The total number of parts manufactured in the quality control process is 500

Therefore, the number of parts that is not a failure or above standard quality is $500 - 30 = 470$

The percentage of the failure part or the percentage that is not abiding by the standards is $\frac{30}{500} \times 100=6%$

Hence, the percentage of failure or rejects produced by the company is 6%.