Question

The average of 6 values is 42. Five values are 38, 40, 41, 44, and 45. Find the sixth value.

Solution

1. Total of all 6 values = 6 x 42 = 252.
2. Sum of five known values = 38 + 40 + 41 + 44 + 45 = 208.
3. Missing value = 252 - 208 = 44.