If the maximum life of a part is 1100 hours, and the average life achieved from 15 parts is 835.3 hours, what percent of the maximum part life has been achieved?

To determine what percentage of the maximum part life has been achieved, you can use the formula:

[

\text{Percentage of maximum life achieved} = \left( \frac{\text{Average life achieved}}{\text{Maximum life}} \right) \times 100

]

In this scenario, the average life achieved is 835.3 hours, and the maximum life is 1100 hours. Plugging in these values:

[

\text{Percentage} = \left( \frac{835.3}{1100} \right) \times 100

]

Calculating this gives:

[

\frac{835.3}{1100} \approx 0.7585

]

Multiplying by 100 to convert to a percentage results in approximately 75.85%. Rounding this to one decimal place gives 75.9 percent.

Therefore, this calculation confirms that the average life achieved from the parts corresponds to 75.9 percent of the maximum part life, making that option the correct choice.