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

### Instruction:
 Darasa la William limejiwekea lengo kila wiki ya idadi ya makopo ya chakula yanayopaswa kukusanywa. Siku ya kwanza, makopo 20 yalikusanywa. Kisha idadi ya makopo iliongezeka kwa 5 kila siku. Ikiwa walikusanya siku 5 kwa wiki ili kufikia lengo lao, makopo mangapi ya chakula yalikuwa lengo lao kwa wiki?


### Response:
 Siku ya pili, walikusanya makopo 20 + 5 = <<20+5=25>>25.
Siku ya tatu, walikusanya makopo 25 + 5 = <<25+5=30>>30.
Siku ya nne, walikusanya makopo 30 + 5 = <<30+5=35>>35.
Siku ya tano, walikusanya makopo 35 + 5 = <<35+5=40>>40.
Hivyo, lengo lao ni kukusanya jumla ya makopo 20 + 25 + 30 + 35 + 40 = <<20+25+30+35+40=150>>150 ya chakula kwa wiki.