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a, b, c, d, and e are five consecutive numbers in increasing
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14 Apr 2018, 02:27
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a, b, c, d, and e are five consecutive numbers in increasing order of size. Deleting one of the five numbers from the set decreased the sum of the remaining numbers in the set by 20%. Which one of the following numbers were deleted?
Re: a, b, c, d, and e are five consecutive numbers in increasing
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16 Apr 2018, 21:33
4
Take any set of 5 consecutive numbers eg: \(1,2,3,4,5\) The sum of the numbers \(= 15\) After deleting one number the sum is \(20%\) less than original hence sum \(= 15*0.8 = 12\) \(15-12 =3\) Therefore \(3\) has been deleted In the set \(a,b,c,d,e\) \(3\) occupies the spot for \(c\) Hence option C