♥ Hey Valerie Here! ♥ please help

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

Plzzz answer both questions and i will give you 100 points

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?