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

### Instruction:
Agatha has some money to spend on a new bike. She spends $15 on the frame, and $25 on the front wheel. If she has $20 left to spend on a seat and handlebar tape, how much money, in dollars, did she have at first?

### Response:
 Agatha anatumia 15+25=<<15+25=40>>40 dola.
Agatha alikuwa na dola 40+20=<<40+20=60>>60 mwanzoni.