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

### Instruction:
Yanna baked twenty butter cookies and forty biscuits in the morning.  In the afternoon, she baked ten butter cookies and twenty biscuits. How many more biscuits did she bake than butter cookies?

### Response:
 Alipika mikate ya siagi thelathini kwa sababu 20 + 10 = <<20+10=30>>30.
Alipika biskuti sitini kwa sababu 40 + 20 = <<40+20=60>>60.
Alipika biskuti thelathini zaidi kuliko mikate ya siagi.