Craig grades 9 test every 22 minutes if craig has 63 test to grade how long will it take him

The answer would be 156 min or 2h and 32 min, the way you would find it is by dividing 63 by 9 and that would get you 7, then you multiply 7 by 22 resulting in 156, then you would simplify it down to 2hours and 32 minutes.

Ithink it should be 55.