In a shipment of 160 machine parts, 5% were defective. in a shipment of 180 machine parts, 10% were defective. for the two shipments combined, what percent of the machine parts were defective?
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160×5/100=8
180×10/100=18
total machine=160+180=340
total defective machine= 18+8=26
%=26×100/340=7.65%
180×10/100=18
total machine=160+180=340
total defective machine= 18+8=26
%=26×100/340=7.65%
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