Three sets of 40, 50 and 60 students appeared for an examination and the pass percentage was 50, 90 and 75 respectively. the pass percentage of the whole set is
Choices.
A) 73.33%
B) 73.44%
C) 74.33%
D) 85.33%
E) 71.33%
Explanation:   total passed student =20+45+45= 
<gadget id="calculator">20+45+45</gadget>
<output>110</output>
110   110 is 73.33% of 150   73.33%NSWER:73.33%
<result>A</result>
Three sets of 40, 50 and 60 students appeared for an examination and the pass percentage was 50, 90 and 75 respectively. the pass percentage of the whole set is