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

### Instruction:
At a party, there are 400 students, a combination of poets, singers and tree huggers. There are 50 more poets than treehuggers at the party. If the number of tree huggers is 120, how many singers are at the party?

### Response:
 Idadi ya washairi kwenye sherehe hiyo ni 50 zaidi ya wapenda miti (120), hivyo kuna washairi 120+50 = <<50+120=170>>170.
Idadi ya washairi na wapenda miti kwenye sherehe hiyo ni 170+120 = <<170+120=290>>290.
Kwa kuwa idadi ya washiriki kwenye sherehe hiyo ni 400, idadi ya waimbaji ni 400-290 = <<400-290=110>>110.