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

### Instruction:
Three years ago, Bethany was twice the age of her younger sister. In 5 years, her younger sister will be 16. How old is Bethany now?

### Response:
 Hebu tuchukue x kuwa umri wa Bethany sasa.
Miaka mitatu iliyopita, Bethany alikuwa na umri wa x - 3 miaka.
Miaka mitatu iliyopita, dada yake mdogo alikuwa na umri wa x - 3 - 2 = <<x-3-2=x-5>>x - 5 miaka.
Baada ya miaka 5, dada yake mdogo atakuwa na umri wa x - 5 + 5 = <<x-5+5=x>>x miaka.
Kwa hiyo, x = 16.
Kwa hiyo, Bethany sasa ana umri wa x - 3 = <<x-3=13>>13 miaka.