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

### Instruction:
Iain has 200 pennies. He realizes that 30 of his pennies are older than he is. If he wishes to get rid of these pennies and then throw out 20% of his remaining pennies, how many will he have left?

### Response:
 Anza kwa kuondoa senti za zamani 200 senti - 30 senti = <<200-30=170>>170 senti.
Chukua 170 senti * .20 = <<170*.20=34>>34.
170 senti - 34 senti = <<170-34=136>>136 senti.