The average of the marks of 12 students in a class is 50. If the marks of each student are doubled, find the new average? Choices:
A) 160  B) 120  C) 100  D) 150  E) 170
Sum of the marks for the 12 students   = 12 * 50= 
<gadget id="calculator">12 * 50</gadget>
<output>600</output>
600. The marks of each student are doubled, the sum also will be doubled.   The new sum=600 * 2= 
<gadget id="calculator">600 * 2</gadget>
<output>1_200</output>
1200. So, the new average= 1200/12= 
<gadget id="calculator">1200/12</gadget>
<output>100</output>
100.   Answer:100
<result>C</result>
The average of the marks of 12 students in a class is 50. If the marks of each student are doubled, find the new average?