A survey is conducted on 800 software engineers. It was found that 45.625% of them know C# language, 56.875% of them know VB and 47.5% know Java. The percentage of software engineers who know C# and VB but not Java is 17.5% and those who know VB and Java but not C# are 15.625%. The percentage of software engineers who knows C# and Java but not VB is 9.375%. The total number of software engineers who only know Java is 150. Answer the question based on the in formation.