The average mark of 20 students in a class is 70 years. The average age of 10 students is 65. What is the total mark of remaining 10 students?
Choose the correct option.
A) 850  B) 800  C) 750  D) 700  E) 680
Sum of the ages of 10 students   = (20 * 70) - (10 * 65) = 1400 - 650= 
<gadget id="calculator">1400 - 650</gadget>
<output>750</output>
750   Required Total marks= 750   Answer: 750
<result>C</result>
The average mark of 20 students in a class is 70 years. The average age of 10 students is 65. What is the total mark of remaining 10 students?