Question

Calculate for y given that mean of 20,2y,25,y,30 is 27​

Answer 1

To find y when the mean of the numbers 20, 2y, 25, y, and 30 is 27, set up and solve the equation resulting in y = 20.

Step-by-step explanation:

To calculate for y given that the mean of 20, 2y, 25, y, and 30 is 27, you can set up an equation based on the definition of mean. The mean is calculated by summing all the values in the set and then dividing by the number of values. In this case, we have 5 values. The equation to find y is as follows:

(20 + 2y + 25 + y + 30) / 5 = 27

Now, simplify and solve for y:

20 + 3y + 55 = 135

3y + 75 = 135

3y = 135 - 75

3y = 60

y = 60 / 3

y = 20

Therefore, the value of y that makes the mean of the set equal to 27 is 20.

Answer 2

y = 218

Step-by-step explanation:

Mean = (Sum of all numbers)/(How many numbers present)

27 = (20 + 2y + 25 + y + 30)/27

27 = (3y + 75)/27

3y + 75 = 729

3y = 729 - 75

3y = 654

y = 218