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

### Instruction:
A train takes 4 hours to reach a destination at a speed of 50 miles per hour. How long would it take if it traveled at 100 miles per hour instead?

### Response:
 Umbali kufikia marudio ni masaa 4 * maili 50 kwa saa = <<4*50=200>>200 maili.
Ikiwa inasafiri kwa kasi ya maili 100 kwa saa, itachukua masaa 200 maili / (maili 100 kwa saa) = <<200/(100)=2>>2 masaa.