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

### Instruction:
The sum of the three angles of a triangle equals 250. The left angle is twice the right angle's value, and the right angle is 60 degrees. Find the value of the top angle?

### Response:
 Kwa kuwa pembe ya kushoto ni mara mbili ya thamani ya pembe ya kulia, pembe ya kushoto ni 60*2 = <<60*2=120>>120 digrii.
Thamani jumla ya pembe ya kushoto na pembe ya kulia ni 120+60 = <<120+60=180>>180 digrii.
Kwa kuwa jumla ya pembe tatu ni sawa na 250, pembe nyingine ina thamani ya 250-180 = <<250-180=70>>70 digrii.