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

### Instruction:
Randy had 32 biscuits. His father gave him 13 biscuits as a gift. His mother gave him 15 biscuits. Randy’s brother ate 20 of these biscuits. How many biscuits are Randy left with?

### Response:
 Baada ya baba yake kumpa biskuti 13, Randy alikuwa na biskuti 32 + 13 = <<13+32=45>>45.
Baada ya mama yake kumpa biskuti 15, Randy alikuwa na biskuti 45 + 15 = <<45+15=60>>60.
Baada ya ndugu yake kula biskuti 20, Randy amebakiwa na biskuti 60 - 20 = <<60-20=40>>40.