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

### Instruction:
Carlos and Diego are racing around the block. Carlos runs around the entire block in 3 minutes. Diego runs around half the block in 2.5 minutes and then is tripped by a dog and can't finish. Assuming he kept up the same speed the entire race, what would've been the average time in seconds for the racers?

### Response:
 Kama angekamilisha mbio, ingekuwa mbio za dakika 5 kwa sababu 2.5 x 2 = <<2.5*2=5>>5
Wastani wa muda ungekuwa dakika 4 kwa sababu (3 + 5)/2 = <<(3+5)/2=4>>4
Wastani ungekuwa sekunde 240 kwa sababu 4 x 60 = <<4*60=240>>240