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

### Instruction:
Jessica was half her mother's age when her mother died. If her mother were alive now, ten years later, she would have been 70. How old is Jessica currently?

### Response:
 Kama mama yake Jessica angekuwa hai leo, miaka kumi baada ya kifo chake, angekuwa na umri wa miaka 70, maana yake alifariki akiwa na umri wa 70-10=<<60=60>>60.
Kama Jessica alikuwa na nusu ya umri wa mama yake wakati mama yake alipofariki, basi alikuwa na umri wa 1/2*60=<<30=30>>30 miaka.
Kwa sasa, miaka kumi baadaye, Jessica ana umri wa 10+30=<<10+30=40>>40.