Betty has $1,000 in her savings account. The interest rate is 2.5%. How much interest will Betty earn when her money has been in bank for 3 years?

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.