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

### Instruction:
John decided to buy 10 pins for himself.  They are normally $20 each but they were on sale for 15% off.  How much did he spend on pins?

### Response:
 Bei ya kawaida ya pini 10 ni 10*20=$<<10*20=200>>200.
Punguzo ni 200*.15=$<<200*.15=30>>30.
Hivyo alilipa 200-30=$<<200-30=170>>170.