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

### Instruction:
A swimming pool is being emptied through a drain at the bottom of the pool and filled by a hose at the top. The drain can empty the pool in 4 hours and the hose can fill the pool in 6 hours. The pool holds 120 liters of water. If the pool starts filled with water, how much water will be left after 3 hours?

### Response:
 Inachukua bomba masaa 4 kutoa maji ya bwawa, hivyo linatoa kwa kasi ya lita 120 / masaa 4 = <<120/4=30>>30 lita/saa.
Kwa masaa 3, bomba litakuwa limeondoa lita 3 * 30 = <<3*30=90>>90 za maji kutoka kwenye bwawa.
Inachukua hose masaa 6 kujaza bwawa, hivyo inajaza kwa kasi ya lita 120 / masaa 6 = <<120/6=20>>20 lita/saa.
Kwa masaa 3, hose itakuwa imeongeza lita 2 * 30 = <<2*30=60>>60 za maji kwenye bwawa.
Baada ya masaa 3, kutakuwa na lita 120 + 60 - 90 = <<120+60-90=90>>90 za maji zilizobaki kwenye bwawa.