A prize of $240 is divided between two persons. If one person receives $180, then what is the difference between the amounts received by the two persons?
(A) $30
(B) $60
(C)$120
(D)$210
(E)$420
Solution for GRE Math Problem 57:
Let’s take three consecutive integers: n-1, n, n+1
Their sum is n-1 + n + n+1 = 3n – is a multiple of 3.
Among the numbers given, only 28 is not the multiple of 3.
Answer:(C) 28
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