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In a shipment of 250 machine parts, 4% were defective. In another shipment of 50 parts, 10% were defective. For two shipments combined what percent of the machine parts were defective?

In a shipment of 250 machine parts, 4% were defective. In another shipment of 50 parts, 10% were defective. For two shipments combined what percent of the machine parts were defective? Correct Answer 5%

For 250 machine parts, defective = 4%For,  50 machine parts, defective = 10%Doing Summation,   For 300 machine parts, defective = 14%     now, For 300 machine parts, defective are 14                                             For 1 machine parts, defective are 14/300                For 100 machine parts, defective are 14×100300 = 4.667% (Ans)

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