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

### Instruction:
 Lori ya Wendy ina tangi la mafuta ambalo linaweza kuhifadhi galoni 20. Pia ana gari lenye tangi la mafuta ambalo linahifadhi galoni 12. Tangi la lori limejaa nusu. Tangi la gari limejaa 1/3. Ikiwa atazijaza kabisa, atahitaji kuongeza galoni ngapi?


### Response:
 Tangi la lori lina galoni 10 kwa sababu 20 x .5 = <<20*.5=10>>10
Tangi la gari lina galoni 4 kwa sababu 12 x (1/3) = <<12*(1/3)=4>>4
Anahitaji kuongeza galoni 10 kwenye lori kwa sababu 20 - 10 = <<20-10=10>>10
Anahitaji kuongeza galoni 8 kwenye gari kwa sababu 12 - 4 = <<12-4=8>>8
Anahitaji kuongeza jumla ya galoni 18.