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

### Instruction:
Ruby is taking dance lessons. They cost $75 for 10 classes in one pack. She can add additional classes at the price of 1/3 more than the average price of a class on the lesson in the pack. if she takes 13 total classes, how much does she pay?

### Response:
 Bei ya wastani ya somo katika kifurushi ni 75/10=$<<75/10=7.50>>7.50
Somo la ziada ni 7.50/3=$<<7.50/3=2.50>>2.50 zaidi ya bei ya wastani
Hivyo, somo la ziada ni 7.50+2.50=$<<7.50+2.50=10>>10
Ananunua masomo 3 ya ziada, hivyo ni 3*10=$<<3*10=30>>30
Ananunua jumla ya masomo 13, hivyo analipa 75+30=$<<75+30=105>>105