Answer: 110
Step-by-step explanation: A tenth is every two digits numbers that ends with 0, if you have 111, you round it to 110. But if you have 115, you round it to 120, all this numbers (1,2,3,4) will be round to the tenth that goes before those numbers, that tenth is 110. All this numbers (5,6,7,8,9) will be round to the tenth that comes after this numbers