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

### Instruction:
Tina is a professional boxer.  She wins her first 10 fights of her career.  She then goes on to win 5 more before losing her first fight, and then doubles her number of wins before losing again.  She then retires.  How many more wins than losses does she have at the end of her career?

### Response:
 Tina anashinda mapigano yake ya kwanza 10, na kisha anashinda mapigano 5 zaidi kwa jumla ya 15+5=<<10+5=15>>15 ushindi kabla ya kupoteza 1.
Kisha anazidisha idadi ya ushindi kwa jumla ya 15*2=<<15*2=30>>30 ushindi, na kupoteza 1 zaidi kwa jumla ya 1+1=<<1+1=2>>2 hasara kabla ya kustaafu.
Kwa kazi yake, ana ushindi zaidi kuliko hasara kwa jumla ya 30-2=<<30-2=28>>28.