CPT maths doubt

khishen shet (ca) (277 Points)

15 June 2011  
In a factory the ratio of skilled sei skilled and unskilled workers is 1:5:2 and their monthly wages are in the ratio of 10:6:2 if there are 10 skilled workers and the total monthly waes of 10 skilled workers amount to 60000 then the total ontly wage bill of fasctory is

Ans 264000 plz explain