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26 Oct 2016, 06:39
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Difficulty:
35%
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Question Stats:
71% (01:30) correct
29%
(01:41)
wrong
based on 263
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If N = 255 is the lowest of a set of 23 consecutive multiples of 15, what is the range of this set?
(A) 315
(B) 330
(C) 345
(D) 360
(E) 375
(A) 315
(B) 330
(C) 345
(D) 360
(E) 375
26 Oct 2016, 10:30
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N=255
255/15 = 17 ---> 17*15 and 17 is the lowest multiple of the 23 consecutive multiples
17+(23-1)= 39
39*15=585 - 17*15= 330
Hope its correct :D
255/15 = 17 ---> 17*15 and 17 is the lowest multiple of the 23 consecutive multiples
17+(23-1)= 39
39*15=585 - 17*15= 330
Hope its correct :D
26 Oct 2016, 11:00
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Highest = 225+(23-1)15
=225+22*15
Highest-Lowest = 225+22*15 - 225
= 330
B
Sent from my iPhone using GMAT Club Forum mobile app
=225+22*15
Highest-Lowest = 225+22*15 - 225
= 330
B
Sent from my iPhone using GMAT Club Forum mobile app
