Ineed with these i am in honors math and it is hard so hrlp

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Me with this one question, and i'll upvote the brainliest answer

Prove that quadrilateral is a rhombus.