A 4-column table with 3 rows. The first column has no label with entries less than 1 acre, greater than or equal to 1 acre, total. The second column is labeled less than or equal to 3 hours per week with entries 180, 40, 220. The third column is labeled greater than 3 hours per week with entries 120, 160, 280. The fourth column is labeled total with entries 300, 200, 500.
The frequency table represents data gathered about how much time some farmers spend tending to their land each week. Complete the conditional relative frequency table by row by identifying the values for each letter.

a =

b =

c =

d =