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

### Instruction:
Sasha made 30 chocolate muffins for her school bake sale fundraiser. Melissa made 4 times as many muffins as Sasha, and Tiffany made half of Sasha and Melissa's total number of muffins. If one muffin sold for $4, how much money did Sasha, Melissa, and Tiffany contribute to the fundraiser?

### Response:
 Melissa alifanya mikate 30 x 4 = <<30*4=120>>120.
Pamoja, Sasha na Melissa walifanya mikate 30 + 120 = <<30+120=150>>150.
Tiffany alifanya mikate 150/2 = <<150/2=75>>75.
Jumla, walifanya mikate 150 + 75 = <<150+75=225>>225.
Walichangia $225 x $4 = $<<225*4=900>>900 kwenye kuchangisha pesa.