Answer:
A. 24 math problems
B. 20 tests
Explanation:
A.
We know
1 hour = 60 minutes
Jaxon completed 12 math problems in 30 minutes
30 mins = 12 math problems
60 mins = 12 x 2 = 24 math problems
So, he finishes 24 math problems in an hour.
B.
We know
1 hour = 60 minutes
Mrs. Maven corrected 5 tests every 15 minutes.
15 mins = 5 tests corrected
60 mins = 5 x 4 = 20 tests corrected
So, she grades 20 tests every hour.