In a factory there are three types of machine M1, M2 and M which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2%, 4% and 5% defective products, respectively. what is the percentage of non-defective products ?
Choices
A) 89%	B) 97.1%	C) 96.1%	D) 86.1%	E) None of these
Solution: Non-defective products,   {[(25*0.98)+(35*0.96)+(40*0.95)]/100}*100   = 96.1%.   Answer: Option 96.1%  (25*0.98)+(35*0.96)+(40*0.95) /100 *100= 
<gadget id="calculator">  (25*0.98)+(35*0.96)+(40*0.95) /100 *100</gadget>
<output>96.1</output>
96.1%.   Answer: Option 96.1%
<result>C</result>
In a factory there are three types of machine M1, M2 and M which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2%, 4% and 5% defective products, respectively. what is the percentage of non-defective products ?