Question

The numbers of products a store sold on 4 consecutive days were x,x+5,x+3 and x+12. if the daily average of the products sold was 13. What is the value of x?

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Answer 1

x = 8

Explanation:

average is calculated as

average =
`(sum)/(count)`

given daily average is 13 , then

`(x+x+5+x+3+x+12)/(4)` = 13 ( multiply both sides by 4 to clear the fraction )

4x + 20 = 52 ( subtract 20 from both sides )

4x = 32 ( divide both sides by 4 )

x = 8