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

### Instruction:
There are 10 rows of 15 chairs set up for the award ceremony. The first row is reserved for the awardees while the second and third rows are for the administrators and teachers. The last two rows are then reserved for the parents and the rest of the rows are for the students. If only 4/5 of the seats reserved for the students are occupied, how many vacant seats from the students can be given to the parents?

### Response:
 Idadi jumla ya viti ni safu 10 * viti 15/viti = <<10*15=150>>150 viti.
Safu ya kwanza ya viti 15 ni kwa ajili ya washindi wa tuzo.
Safu ya pili na ya tatu ya viti 15 kila moja ni kwa ajili ya waendeshaji na walimu.
Safu mbili za mwisho za viti 15 kila moja ni kwa ajili ya wazazi.
Safu zilizobaki za viti 15 kila moja ni kwa ajili ya wanafunzi.
Idadi ya viti kwa ajili ya wanafunzi ni safu 4 * viti 15/viti = <<4*15=60>>60 viti.
Idadi ya viti vilivyochukuliwa na wanafunzi ni 4/5 * viti 60 = <<4*60/5=48>>48 viti.
Idadi ya viti vilivyobaki kwa wanafunzi ni 60 viti - 48 viti = <<60-48=12>>12 viti.
Idadi jumla ya viti vilivyobaki ni 12 viti + 30 viti = <<12+30=42>>42 viti.