Five numbers have an average of 90. Four of the numbers are 87, 93, 89, and 85. What is the remaining number?
1 Answer
Jan 19, 2017
Remaining number is
Explanation:
Average of given set of numbers is their sum divided by their count.
Here we have five numbers and as their average is
their sum must be
Bur four of them add up to
Hence, remaining number is