Solve the system of equation by elimination-x-y=4 and 2x+4y=4 by combining the equations

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site