Posted by bob on .
How many distinct integer values of N between 1 and 1000 are there, such that
N=4a+b+4c and 2N=7a+6b+7c for some positive integers a, b and c?

ALGEBRA!!!! 
Anonymous,
21

ALGEBRA!!!! 
Akhu,
58

ALGEBRA!!!! 
Anirudh Mahapatro,
58