Question

mrs . Nunez is correcting math test she corrects 7 test before school, and 5 test after school . if each test takes her 1/5 hour to correct how long will it take mrs Nunez to correct the test

Answer 1

She corrects 7+5 tests in total.

Each test = 0.2 hours to correct.

12x0.2= 2.4

It will take her 2.4 hours to correct all the tests

Answer 2

7+5=12, the total tests she has to grade.
So that's 1/5*12=2.4 hrs.