I think it is 13 by looking at the angle and numbers.
Answer:
Step-by-step explanation:
The answer is 16 3/10
That's about as mixed as you can get it.
43 47 53 59 are the prime numbers
5/6 = .83333333333333333333333333.... It goes on...
.833333333333333333 * 18 = 15
15 is your answer
Another way you could do it is 18/6 = 3
3+3+3+3+3 = 15
3 being 1/6th of 18 *Hope This Helps...*