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

### Instruction:
There is a road stretching 3 miles from the base camp to the chain challenge. Every 20 minutes, a car comes down the road from the base camp towards the chain challenge. How many hours have passed once 30 cars have come down the road?

### Response:
 Dakika 20 x 30 = <<20*30=600>>600 zimepita.
Dakika 600 = <<600/60=10>>10 masaa zimepita.