set theory

[ahlashi]

of a total of 120 musicians in a club,  5% can play all three instruments violin guitar and flute
the no. of musicians who can play any 2 and only 2 of the above is 30.
the no. of musicians who can play guitar alone is 40.
the  total no. who can play violin alone or flute alone is ?
Answer is  44

pls help
m not getting the right ans

[Mauli]