The air traffic controller's records show 512 planes landed one day. Seventeen planes were 727s. What is the relative frequency of a 727 landing? Write as a fraction and a decimal.

727s / total planes = ?

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To find the relative frequency of a 727 landing, we need to divide the number of 727s by the total number of planes that landed.

Given that there were 512 planes that landed and 17 of them were 727s, we can set up the following calculation:

Relative frequency = Number of 727s / Total number of planes

Relative frequency = 17 / 512

To write this as a fraction, we keep the numerator and denominator as they are:

Relative frequency = 17/512

To write this as a decimal, we can divide 17 by 512:

Relative frequency ≈ 0.033203125

Therefore, the relative frequency of a 727 landing is approximately 0.033203125 or 17/512.