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

### Instruction:
Julia collects old watches. She owns 20 silver watches, and three times as many bronze watches. She decided to buy gold watches to add to her collection, a number that represents 10% of all the watches she owns. How many watches does Julia own after this purchase?

### Response:
 Julia ana saa 20 * 3 = <<20*3=60>>60 za shaba.
Hivyo anamiliki jumla ya saa 20 + 60 = <<20+60=80>>80 kabla ya kununua saa za dhahabu.
Idadi ya saa za dhahabu Julia ananunua inawakilisha 10/100 * 80 = <<10/100*80=8>>8 saa.
Kwa kuongeza saa za dhahabu kwenye mkusanyiko wake, Julia anamaliza na saa 80 + 8 = <<80+8=88>>88.