Five numbers have an average of 90. Four of the numbers are 87, 93, 89, and 85. What is the remaining number?

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Answer 1 · 2017-01-19T08:10:29

Remaining number is #96#

Average of given set of numbers is their sum divided by their count.

Here we have five numbers and as their average is #90#,

their sum must be #5xx90=450#

Bur four of them add up to #87+93+89+85=354#

Hence, remaining number is #450-354=96#