In the faculty of Reverse-Engineering, 200 second year students study numeric methods, 400 second year students study automatic control of airborne vehicles and 100 second year students study them both. How many students are there in the faculty if the second year students are approximately 60% of the total?	Choose the correct choice from the following answers.
A) 834 B) 750 C) 633 D) 654 E) 812
Total number of students studying both are 400 + 200 - 100= 
<gadget id="calculator">400 + 200 - 100</gadget>
<output>500</output>
500 (Subtracting the 100 since they were included in the both the other numbers already).   So 60% of total is 500, so 100% is approx. 834.   834nswer is 834
<result>A</result>
In the faculty of Reverse-Engineering, 200 second year students study numeric methods, 400 second year students study automatic control of airborne vehicles and 100 second year students study them both. How many students are there in the faculty if the second year students are approximately 60% of the total?