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

### Instruction:
Daniel collects Russian dolls that normally cost $4 each. He saves enough money to buy 15 Russian dolls. However, the price suddenly drops to $3 each. How many Russian dolls can he buy now at the discounted price, given his savings?

### Response:
 Kwa bei ya awali angeweza kununua vikuku 15 kwa $4 kila kimoja, kwa gharama ya jumla ya $60 (15x4=60).
Kwa bei iliyopunguzwa angekuwa na uwezo wa kununua vikuku vya $60 kwa bei ya zamani, ambayo ni 60/3=<<60/3=20>>20 vikuku.