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

### Instruction:
Felicity and Adhira took separate trips. Felicity used 5 less gallons of gas than four times the number of gallons that Adhira used for her trip. Together the girls used 30 gallons of gas.  How many gallons did Felicity use?

### 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.