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

### Instruction:
Jimmy bought 3 pens for school for $1 each, 4 notebooks for $3 each and 2 folders for $5 each. If he paid with a $50 bill, how much change will he get back?

### Response:
 Alitumia $3 x 4 = $<<3*4=12>>12 kwa daftari.
Alitumia $2 x 5 = $<<2*5=10>>10 kwa folda.
Jumla ya pesa alizotumia ni $12 + $10 + $3 = $<<12+10+3=25>>25.
Atapata mabadiliko ya $50 - $25 = $<<50-25=25>>25.