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

### Instruction:
A survey was conducted by a school to the parents about their children's online class experience. Fifteen percent of the respondents rated Excellent; 60% rated Very Satisfactory; 80% of the remaining respondents rated Satisfactory and the rest rated Needs Improvement. If 120 parents answered the survey, how many of them rated Needs Improvement?

### Response:
 Jumla ya asilimia ya wale walioipata alama ya "Bora" au "Kuridhisha Sana" ni 15% + 60% = 75%.
Hivyo, 100% - 75% = 25% ya washiriki walipata alama ya "Kuridhisha" au "Inahitaji Kuboreshwa".
Hii inamaanisha, 25/100 x 120 = <<25/100*120=30>>30 wazazi walipata alama ya "Kuridhisha" au "Inahitaji Kuboreshwa".
Hivyo, 30% walipata alama ya "Kuridhisha" na 30% - 80% = 20% walipata alama ya "Inahitaji Kuboreshwa".
Hivyo, 30 x 20/100 = <<30*20/100=6>>6 wazazi walipata alama ya "Inahitaji Kuboreshwa".