Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Roger's age is 5 more than twice Jill's age. In 15 years, their age difference will be 30 years less than Finley's age. If Jill is 20 years old now, how old is Finley?

### Response:
 Maradufu ya umri wa Jill ni 2*20=<<2*20=40>>40
Ikiwa umri wa Roger ni miaka 5 zaidi ya mara mbili ya umri wa Jill, basi ana miaka 5+40=45.
Baada ya miaka 15, Jill atakuwa na miaka 20+15=35.
Umri wa Roger pia utakuwa miaka 45+15=60 baada ya miaka 15.
Tofauti ya umri kati ya Roger na Jill baada ya miaka 15 itakuwa 60-35=<<60-35=25>>25 miaka.
Baada ya miaka 15, tofauti ya umri kati ya Roger na Jill itakuwa miaka 30 chini ya umri wa Finley, maana yake Finley atakuwa na miaka 30+25=<<30+25=55>>55.
Kwa sasa, Finley ana miaka 55-15=<<55-15=40>>40.