Find the number of numbers if their arithmetic mean is 0.031 and their sum is 310

The arithmetic mean of several numbers is equal to the sum of these numbers divided by the number of terms in this sum.
If you need to find the arithmetic mean хса. numbers х1, х2, …, хn, you can use the formula: хса. = (x1 + x2 +… + xn) / n, where n is a natural number.
With well-known HSA. and х1 + х2 +… + хn, you can find n by the formula: n = (х1 + х2 +… + хn) / хса.
According to the conditions of the assignment, хса = 0.031 and х1 + х2 +… + хn = 310. You need to find n.
Therefore, n = 310 / 0.031 = 10000.
Answer: 10000.