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

### Instruction:
Ben bought a lawnmower for his garden. He paid $100 for it. After six months, the value of the mower dropped by about 25%. Over the next year, the value of the mower dropped another 20% in value. How much is Ben's lawnmower worth after this time?

### Response:
 Baada ya miezi sita, thamani ya kifaa cha kukata nyasi ilishuka kwa $100 * 25% = $25. Hivyo, baada ya miezi sita, kifaa cha kukata nyasi kilikuwa na thamani ya $100 - $25 = $75. Kwa mwaka ujao, thamani ya kifaa cha kukata nyasi ilishuka kwa $75 * 20% = $15. Hii inamaanisha kifaa cha kukata nyasi sasa kina thamani ya $75 - $15 = $60.