I am not understanding this last problem on my stats hw:

A person scores 81 on a test of verbal ability and 6.4 on a test of math ability. For the verbal ability test, the mean for people in general is 50 and the standard deviation is 20. For the math ability test, the mean for people in general is 0 and the standard deviation is 5. Which is the person's stronger ability verbal or math? Explain your answer to a person who has never taken a course in stats.

Not really sure what to make of this. Help would be appreciated. Thank you!