Question

Richard had carpeting installed in his new family room. The workers arrived at 12:20 and left at 3:15. How long did they take?
A 3 hours and 5 minutes
B 2 hours and 5 minutes
C 2 hours and 55 minutes
D 3 hours and 55 minutes

Answer 1

I would go with C because think about it. 

What time would it be in 2 hours if it was 12:20? 2:20 but there's still time left for it to be 3:15! So that is when you add 55 minutes to get 3:15

Hoped I help!