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Prime numbers are added

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Prime numbers are added

by eaakbari » Thu Mar 25, 2010 11:12 pm
The sum of three prime numbers is 100.If one of them exceeds another by
36 then one of the numbers is?

a.7
b.29
c.41
d.67
e.cannot be determined.
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by eaakbari » Thu Mar 25, 2010 11:13 pm
x+(x+36)+y=100
2x+y=64
Therefore y must be even prime which is 2
2x+2=64=>x=31.
Third prime number =x+36=31+36=67.

OA = D
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by sanju09 » Thu Mar 25, 2010 11:58 pm
eaakbari wrote:The sum of three prime numbers is 100.If one of them exceeds another by
36 then one of the numbers is?

a.7
b.29
c.41
d.67
e.cannot be determined.
The option "cannot be determined" is normally NOT seen on GMAT PS section, make sure it looks like a GMAT one!! Great explanation though!
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by eaakbari » Fri Mar 26, 2010 12:07 am
Sure. Found it on an agarwal aptitude test. Liked the question. and added E for flavor. :wink:
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