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

### Instruction:
Yuri has been adopting puppies for a month now. The first week he adopted 20 puppies, the second week 2/5 times as many puppies as the first week, the third week twice the number of puppies he adopted in the second week, and the fourth week ten more puppies than he adopted on the first week. How many puppies does Yuri have now?

### Response:
 Ikiwa Yuri alikaribisha mbwa 20 wiki ya kwanza, alikaribisha mbwa 2/5 * 20 = <<2/5*20=8>>8 wiki ya pili.
Jumla ya idadi ya mbwa Yuri aliyowakaribisha wiki ya tatu ni 2 * 8 mbwa = <<2*8=16>>16, ambayo ni mara mbili ya idadi ya mbwa aliowakaribisha wiki ya pili.
Wiki ya nne, Yuri alikaribisha mbwa kumi zaidi ya wiki ya kwanza, ambayo ni jumla ya mbwa 10 + 20 = <<10+20=30>>30.
Jumla ya idadi ya mbwa Yuri aliyowakaribisha katika wiki nne ni 30 + 16 + 8 + 20 = <<30+16+8+20=74>>74 mbwa.