Van Helsing gets paid by the town to remove all the vampires and werewolves. He gets $5 per vampire and $10 per werewolf. He removes half the vampires and removes 8 werewolves, and earned $105. There were 4 times as many werewolves as vampires. What percentage of the werewolves did he remove?
He earns $80 from werewolf removal because 8 x 10 = <T>multiply(8, 10)=80
He earned $25 from vampire removal because 105 - 80 = <T>subtract(105, 80)=25
He removed 5 vampires from town because 25 / 5 = <T>divide(25, 5)=5.0
There were 10 vampires because 5 / .5 = 10
There were 40 werewolves because 4 x 10 = <T>multiply(4, 10)=40
The proportion of werewolves that he removed was .2 because 8 / 40 = <T>divide(8, 40)=0.2
The percentage of werewolves removed was 20% because 100 x .2 = <T>multiply(100, 0.2)=20.0
