Answer:
The temperature at 8:00 A.M. was 18º C.
Explanation:
Given that at 2:00 P.M., a radio announcer reported that the temperature was 25 ° C, and that from 11:00 A.M. to 2:00 P.M. the temperature had risen 4 ° C, while from 8:00 A.M. to 11:00 A.M. the temperature had risen 3 ° C, to determine what was the temperature at 8:00 A.M. the following calculation must be performed:
25 - 4 - 3 = X
21 - 3 = X
18 = X
Thus, the temperature at 8:00 A.M. was 18º C.