Please help. i do not understand this!‍♀️

Need on this one asap im almost done with this subject

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.