If the mean of 4, y, 8 and 10 is 7. Find Y?
A
6
B
10
C
7
D
9
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
\(\frac{4 + y + 8 + 10}{4}\) = 7
22 + y = 4 x 7
22 + y = 28
y = 28 - 22 = 6
Source: Myschool Past Questions Archive (Record #44745)