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

### Instruction:
Sunnyvale School was having a picnic. They wanted to make fruit punch. They had 4.5 liters of orange punch. They had twice as much cherry punch as orange punch and 1.5 liters less of apple juice than cherry punch. When they combined all of the fruit juices together, how many liters of fruit punch did they have?

### Response:
 Hebu x iwe kiasi cha kinywaji cha cherry na y iwe kiasi cha juisi ya tufaha. Tunajua kwamba 4.5 = x/2 na x = y + 1.5.
Kwa kubadilisha equation ya pili katika equation ya kwanza, tunapata 4.5 = (y + 1.5)/2
Kwa kuzidisha pande zote mbili kwa 2, tunapata 9 = y + 1.5
Kwa kutoa 1.5 kutoka pande zote mbili, tunapata y = 7.5
Kwa kubadilisha thamani hiyo katika equation x = y + 1.5, tunapata x = 7.5 + 1.5 = <<7.5+1.5=9>>9
Tunajua kwamba jumla ya kiasi cha kinywaji cha matunda ni 4.5 + x + y = 4.5 + 9 + 7.5 = <<4.5+9+7.5=21>>21 lita.