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

### Instruction:
Selina is selling some of her old clothes to a second-hand store. They will buy her pants for $5 each, her shorts for $3 each, and her shirts for $4 each. She sells 3 pairs of pants, 5 pairs of shorts, and some shirts. After she gets her money, she sees 2 shirts that she likes which cost $10 each and buys them. She leaves the store with $30. How many shirts did she sell to the store?

### Response:
 Mashati aliyonunua yalimgharimu $20 kwa sababu 2 x 10 = <<2*10=20>>20
Alichuma $50 kwa kuuza nguo zake kwa sababu 20 + 30 = <<20+30=50>>50
Alipata $15 kwa kuuza suruali kwa sababu 3 x 5 = <<3*5=15>>15
Alipata $15 kwa kuuza kaptula kwa sababu 3 x 5 = <<3*5=15>>15
Alipata $20 kwa kuuza mashati kwa sababu 50 - 15 - 15 = <<50-15-15=20>>20
Duka lilinunua mashati 5 kutoka kwake kwa sababu 20 / 4 = <<20/4=5>>5