Half the number in Mrs. Finley's class is 24 / 2 = 12. Mr. Johnson has 12 + 10 = 22 students.
This justifies what answer for what question? Q & A:
Mrs. Finley's class has 24 students, and Mr. Johnson's class has 10 more than half the number in Mrs. Finley's class. How many students are in Mr. Johnson's class?
22