HELP. PLEASE.

Pls! does anybody know a shortcut for answering these types of questions in the future?

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

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.