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

### Instruction:
 Felicity na Adhira walifanya safari tofauti. Felicity alitumia galoni 5 chini ya mara nne ya idadi ya galoni ambazo Adhira alitumia kwa safari yake. Pamoja, wasichana hao walitumia galoni 30 za mafuta. Felicity alitumia galoni ngapi?


### Response:
 Hebu A iwe galoni za Adhira
Felicity = 4A - 5
5A - 5 = 30
5A = 35
A = <<7=7>>7
Felicity = (4 * 7) - 5 = <<(4*7)-5=23>>23
Felicity alitumia galoni 23 za mafuta.