Answer:
The estimate of 1/2 + 1/9 is 24.444...
Step-by-step explanation:
Given that:
Khaled rode 1/2 of the trail on Saturday, and 1/9 of the trail on Sunday.
Since he estimated that he rode more than 22 miles over the two days.
1/2 of 40 = 1/2 * 40 = 20
1/9 of 40 = 1/9 * 40 = 4.4444...
His total ride was 24.4444...