The average is 15.
15
The average is 15.
(12+15+18)/3 = 15
To find the average of a set of numbers, you add all the numbers together and then divide by the total number of values. In this case, the sum of 18, 12, 13, and 17 is 60. Since there are 4 numbers in the set, you divide 60 by 4 to find the average, which is 15.
It is: (15+18)+12 = 45
Well, isn't that just a happy little group of numbers we have there? To find the mean average, you simply add up all the numbers and then divide by how many there are. So, for these numbers, you would add 18 + 12 + 10 + 10 + 25, which equals 75. Then, you divide 75 by 5 (since there are 5 numbers), giving you a mean average of 15. Happy calculating!
(15*12+16*15+18*14)/4913.7142857 is the true average age
To find the average of a set of numbers, you add all the numbers together and then divide by the total count of numbers. In this case, the sum of 16, 18, 14, and 12 is 60. Since there are four numbers in the set, you divide 60 by 4 to get an average of 15.
GCF(12, 15, 18) = 3
LCM of 12 and 15 and 18 is 180.
-12 + 18 - (-15) = -12 + 18 +15 = 21