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

### Instruction:
If Natasha was going 10 mph over the speed limit and it took her an hour to arrive at her destination that was 60 miles away, what was the speed limit?

### Response:
In 1 hour, she traveled 60 miles. So, she traveled 60 miles / 1 hour = 60 mph.
However, she was going 10 mph over the speed limit, so she was going 70 mph.
The speed limit is 70 mph - 10 mph = <<70-10=60>>60 mph.
#### 60

