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The average of 7 consecutive numbers is 20. The largest of these numbers is:

  1. A
    25
  2. B
    20
  3. C
    21
  4. D
    23

Solution & Step-by-step Explanation

Let the 7 consecutive numbers be represented as:
x−3,x−2,x−1,x,x+1,x+2,x+3
The average of these 7 consecutive numbers is simply the middle term, which is x.
Given that the average is 20:

x=20
The largest of these numbers is:

Largest number=x+3
Largest number=20+3=23

Practice this question

Try it yourself before checking the explanation above.

The average of 7 consecutive numbers is 20. The largest of these numbers is:
A
25
B
20
C
21
D
23

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