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

### Instruction:
Violet is planning a hike through the desert with her dog. Violet needs 800 ml of water per hour hiked and her dog needs 400 ml of water per hour. If Violet can carry 4.8 L of water, how many hours can she and her dog spend hiking?

### Response:
Violet and her dog consume 800 + 400 = <<800+400=1200>>1200 ml of water per hour.
Since 1 L is equal to 1000 ml, then Violet's 4.8 L pack is equal to 4800 ml.
Hence, she and her dog can hike for 4800/1200 = <<4800/1200=4>>4 hours.
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