Can someone me with this question ?

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

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Pls never taught i’m really confused and i rlly need