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

### Instruction:
Grace is filling her pool in the backyard with a hose that sprays 50 gallons/hour. She waited for 3 hours but the pool wasn't full, so she decides to add another hose that sprays 70 gallons/hour, and after 2 more hours the pool is full. How much water can Grace’s pool contain?

### Response:
 Katika masaa ya kwanza 3, bwawa linapata lita 50 kwa saa x masaa 3 = <<50*3=150>>150 lita
Kwa kuongeza bomba lingine, bwawa lilikuwa linajazwa kwa kasi ya lita 50 kwa saa + lita 70 kwa saa = <<50+70=120>>120 lita kwa saa.
Katika masaa 2 yajayo na mabomba yote, bwawa linapata lita 120 kwa saa x masaa 2 = <<120*2=240>>240 lita
Uwezo wa jumla wa bwawa ni lita 240 + lita 150 = <<240+150=390>>390 lita Inafaa kutaja kuwa mabomba 2 yanayotiririka wakati mmoja hayafanyi kazi kwa ufanisi kama bomba 1 linalotiririka pekee kwa sababu maji kutoka kwenye mabomba 2 yanachanganyika, ambayo inamaanisha kuwa lita 120 ni chini ya lita 50 + lita 70