Can you please look at the photo and anwser the question for me thanks ( 1 5/6 - 2 3/4 ) - 2/3 + 5/6 - (- 1/2)

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers