Question

An inspector found that 4 out of 116 parts were defective. What percent of the parts were defective?

A. 3.45%
B. 29%
C. 26.1%
D. 3.03%

Answer 1

A. 3.45%
The formula for a proportion is x/n, "n" is the total of objects and "x" is the number os successes. In this case "defective" is the success because you want to know the percentage for defective parts, so 4/116= 0.0345 and you have to multiply the result by 100 and you get your answer in percentage.

Answer 2

A. 3.45%

Explanation:

Given,

Total parts = 116,

Defective parts = 4,

Thus, the percentage of the parts that were defective

`=\frac{\text{D efective parts}}{\text{Total parts}}* 100`

`=(4)/(116)* 100`

`=(400)/(116)`

`=3.44827586207\%`

`\approx 3.45\%`

Option A is correct.