Question

what percentage of trains were late in this particular week?
27.6%
38.2%
40.0%
72.4%

Explanation:

Step1: Recall the formula for percentage

The formula for percentage is $\frac{\text{Part}}{\text{Whole}}\times100\%$. Here, the "part" is the number of late trains ($58$) and the "whole" is the total number of trains ($210$).

Step2: Calculate the percentage

Substitute the values into the formula: $\frac{58}{210}\times 100\%$.
First, calculate $\frac{58}{210}\approx0.276$.
Then, $0.276\times100\% = 27.6\%$.

Answer:

$27.6\%$ (the first option)