The average is 27.
5+7+9+12+12 = 45 and 45/5 = 9 which is the mean average
45
9 jelly beans. 9 * 5 = 45. OR 45 / 5 = 9.
45 kg
In total, we are changing the sum of the 9 numbers by 1 + 2 + ... + 9 = 9 x 10 / 2 = 45, so each of the numbers is increased by, on average, 45/9=5. If the old average was 40, the new one is 40 + <the average amount each number was increased by> = 40 + 5 = 45.
45 -9 = 36
No. As 9 is smaller than 45 it cannot be divisible by 45. However, 9 is a FACTOR of 45; and 45 is divisible by 9.
9
It is: 9/45 = 1/5
The average of 8, 11, 6, 12, and 8 is 9. (8 + 11 + 6 + 12 + 8) / 5 = 45 / 5 = 9.
9:45
45/9=5(45 divided by 9 equals 5)