If the mean of weight of students in a class of weight 38, 50, 70, 88 and 110 is 71.5 kg, what is the mean of the class if student of weight 50 kg left the class?  Options.
A) 72 kg B) 75 kg C) 68.5 kg D) 76.5 kg E) 80.5 kg
Mean = (Sum of all weights in class)/(no. students)   M1 = (38+70+88+110)/(4)= 
<gadget id="calculator">(38+70+88+110)/(4)</gadget>
<output>153/2 = around 76.5</output>
76.5 kg   Answer=76.5 kg
<result>D</result>
If the mean of weight of students in a class of weight 38, 50, 70, 88 and 110 is 71.5 kg, what is the mean of the class if student of weight 50 kg left the class?