Landry borrowed $88.00 from his grandparents to purchase a season pass to a theme park. After saving up his allowance for one month, he is able to pay them $31.78. How much does Landry still owe his grandparents?

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.