###Human: 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?, ### Assistant: Frederick is 20 * 2 = 40 years old
Julian is 40 - 20 = 20 years old
Kyle is 20 + 5 = 25 years old 
 So the answer is :  25