Tony puts $1,000 in a savings account for 1 year. It earns 20% interest. He then takes out half the money to buy a new TV. The next year, the remaining money earns 15% interest. How much is now in the account?
After one year he earns $200 in interest because 1,000 x .2 = <T>multiply(1000, 0.2)=200.0
After one year it has $1,200 in the account because 1,000 + 200 = <T>add(1000, 200)=1200
He takes out $600 because 1,200 / 2 = <T>divide(1200, 2)=600.0
After this it has $600 in it because 1,200 - 600 = <T>subtract(1200, 600)=600
She earns $90 in interest because 600 x .15 = <T>multiply(600, 0.15)=90.0
The account now has $690 because 600 + 90 = <T>add(600, 90)=690
