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

### Instruction:
 Jacob anafanya mitihani minne katika somo lake la fizikia na anapata alama 85, 79, 92 na 84. Anapaswa kupata alama ngapi kwenye mtihani wake wa tano na wa mwisho ili awe na wastani wa alama 85?


### Response:
 Kwa kuwa anahitaji wastani wa alama 85 na anafanya mitihani mitano, anapaswa kuwa na jumla ya alama 85 * 5 = <<85*5=425>>425.
Kwa sasa ana alama 85 + 79 + 92 + 84 = <<85+79+92+84=340>>340.
Hivyo, kwenye mtihani wake wa tano anahitaji alama 425 - 340 = <<425-340=85>>85.