She reached her goal on the 30th day
Answer:

Step-by-step explanation:
you have the numbers 1-10 right? and the multiples of 4 that fit in this interval are 4 and 8. By that, you have 2 numbers out of the 10 that could be the answer, so 2/10 or 1/5 or 0.2%
Here it is step by step :
With explanations
"Lily should take an x-ray" is the one statement that is the law of detachment in the paragraph given in the question. It is important to go through the paragraph very minutely to find the law of detachment. I hope that this is the answer that you were looking for and the answer has come to your desired help.