Average Practice Test 5

Question : 9 of 40

Marks: +1, -0

The average of seven consecutive positive integers is 26. The smallest of these integers is:

Solution:

The seven consecutive positive integers =x, x+1, x+2, x+3,x+4, x+5, x+6

Average

={x+ x+1+x+2+x+3+x+4+x+5+ x+6}/7

⇒26={7x+21}/7

⇒182={7x+21}

⇒x={182-21}/7=23

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