Kyle is 5 years older than Julian. Julian is 20 years younger than Frederick. Frederick is 2 times older than Tyson. If Tyson is 20, how old is Kyle?
Frederick is 20 * 2 = <T>multiply(20, 2)=40 years old
Julian is 40 - 20 = <T>subtract(40, 20)=20 years old
Kyle is 20 + 5 = <T>add(20, 5)=25 years old
