I really need help with this

What is a rational number between 9.5 and 9.7

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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.