To determine the percentage of coach passengers who did not check bags, let's follow these steps:
1. Identify the total percentage: We know that 100% represents the total number of coach passengers.
2. Identify the complementary percentage: We are given that 70.4% of the coach passengers checked bags. To find the percentage of those who did not check bags, we need to calculate the complement of 70.4%.
3. Calculate the complement:
[tex]\[
\text{Percentage of passengers who did not check bags} = 100\% - 70.4\%
\][/tex]
4. Perform the subtraction:
[tex]\[
100\% - 70.4\% = 29.6\%
\][/tex]
5. Round to the nearest tenth: In this case, the value is already at the nearest tenth, which is 29.6%.
So, the percentage of coach passengers who did not check bags is 29.6%, which doesn't match any provided options. Make sure to double-check any given data or assumptions.