Question

The averarge of four numbersis 30.If the sum of first three numbers is 85, the fourth number is​

Answer 1

Answer:

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The averarge of four numbers is 30.If the sum of first three numbers is 85, the fourth number is

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Sum of the numbers =$30{\times{4\:=\:120}}$

Sum of first 3 numbers = 85

4 th number = ${120\:-\:85}$

${\implies{4\:th \:number\:=\: 35}}$

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