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

### Instruction:
Jenine can sharpen a pencil 5 times before it runs out. She needs to sharpen a pencil for every 1.5 hours of use. She already has ten pencils and needs to write for 105 hours. A new pencil costs $2. How much does she need to spend on more pencils to be able to write for 105 hours?

### Response:
 Jenine ana kalamu kumi ambazo kila moja inadumu masaa 1.5, hivyo ana masaa 10 x 1.5 = <<10*1.5=15>>15 ya kuandika.
Anahitaji masaa 105 - 15 = <<105-15=90>>90 zaidi ya kuandika.
Kila kalamu inadumu masaa 1.5, hivyo anahitaji kalamu 90/1.5 = <<90/1.5=60>>60 zaidi.
Kila kalamu inagharimu $2, hivyo anahitaji kutumia $2 x 60 = <<2*60=120>>$120 kwa kalamu zaidi.