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

### Instruction:
Beth had 150 students in her 10th-grade class.  The following year 30 more students join.  In her final year, 15 students left.  How many students did Beth have in her class at the end of her final year?

### Response:
 Beth alikuwa na wanafunzi 150 katika darasa lake la kidato cha kumi, na akaongeza wanafunzi 30 zaidi mwaka uliofuata kwa jumla ya 150+30= <<150+30=180>>180 wanafunzi
Katika mwaka wake wa mwisho, wanafunzi 15 waliondoka katika darasa lake, hivyo jumla yake ilikuwa 180-15=165 wanafunzi