To increase an amount by 18% multiply by

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Write the following as a base and exponent

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.