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DS-12
Source: Beat The GMAT — Data Sufficiency |
Yes, D is correct answer.
gosh that was easy too!
let a, b, c, d, e be the 5 DIFFERENT POSITIVE integers.
Q: (a+b+c+d+e)/5 >= 30?
choice 1). {10 (a+b+c+d+e)}/5 >=30?
=> a+b+c+d+e>=15?
even if you take 1,2,3,4,5 as the first 5 DIFFERENT POSITIVE integers, their sum is 15,
A is sufficient.
Choice 2). 160/5 = 32, which is >30, SUFFICIENT.
Hence D is the correct answer.
Is that correct logic?
gosh that was easy too!
let a, b, c, d, e be the 5 DIFFERENT POSITIVE integers.
Q: (a+b+c+d+e)/5 >= 30?
choice 1). {10 (a+b+c+d+e)}/5 >=30?
=> a+b+c+d+e>=15?
even if you take 1,2,3,4,5 as the first 5 DIFFERENT POSITIVE integers, their sum is 15,
A is sufficient.
Choice 2). 160/5 = 32, which is >30, SUFFICIENT.
Hence D is the correct answer.
Is that correct logic?
