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

### Instruction:
Happy Island has 60 turtles. This means there are 10 more than 2 times as many turtles on Happy Island as on Lonely Island. How many turtles are there on Lonely Island?

### Response:
After subtracting 10 from the number of turtles on Happy Island, we get 60 - 10 = <<60-10=50>>50 turtles
Dividing this number by two, we find that the number of turtles on Lonely Island is 50 / 2 = <<50/2=25>>25 turtles.
#### 25