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

### Instruction:
Rob and Mark plan to meet at the national park. It takes 1 hour for Rob to get to the national park and it takes three times as much time for Mark to get to the national park. If Rob leaves his home at 11 a.m., at what time should Mark leave his home so that they both arrive at the same time?

### Response:
 Inamchukua Mark saa 1 * 3 = <<1*3=3>>3 kufika katika hifadhi ya taifa.
Muda ziada inamchukua Mark kufika katika hifadhi ya taifa ni saa 3 - saa 1 = <<3-1=2>>2.
Mark anapaswa kuondoka nyumbani kwake saa 11 asubuhi - saa 2 = <<11-2=9>>9 asubuhi.