Subject
Quantitative Aptitude
Topic
Average
The average of 7 consecutive numbers is 20. The largest of these numbers is :
The average of 7 consecutive numbers is 20. The largest of these numbers is :
ক)
21খ)
25গ)
23ঘ)
29Explanation
Let the numbers be x, x + 1, x + 2, x + 3, x + 4, x + 5 and x + 6, Then (x + (x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) + (x + 6)) / 7 = 20. or 7x + 21 = 140 or 7x = 119 or x =17. Latest number = x + 6 = 23.Related questions
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