A School has 15 teaching staff and 10 non teaching staff. The 15 teaching staff have an average salary of $1000. The average salary of the 10 non teaching staff is $500. What is the average salary for the school?	Choose the correct choice from the following choices
A) $650  B) $800  C) $1300  D) $400  E) $900
The number of teaching staff are 15   Their average salary is $1000   The number of non teaching staff is 10   Their average salary is $500   The total amount of salary for teaching staff is 15*1000 is $15,000   The total amount of salary for non teaching staff is 10*500 is 5000   Total amount of salary for the school is 15,000+5000=20,000   Average salary for the school is 20,000/15+10=800   Answer is $800
<result>B</result>
A School has 15 teaching staff and 10 non teaching staff. The 15 teaching staff have an average salary of $1000. The average salary of the 10 non teaching staff is $500. What is the average salary for the school?