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

### 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:
 นักกวี: 120 + 50 = <<120+50=170>>170
รวมทั้งหมด: 170 + 120 = <<170+120=290>>290
นักร้อง: 400 - 290 = <<400-290=110>>110