Problem Solving (PS) | Re: In a shipment of 120 machine parts, 5 percent were defective

1. 120 x 5 = 600 = move decimal two digits left because percent = 6 parts defective from 120 shipment
2. 80 x 10 = 800 = 8 (move decimal again) parts defective
3. Find total parts = 120 + 80 = 200
4. Find total defective parts = 6 + 8 = 14
5. (14 / 200) x 100 = 7% parts defective

Answer is (B) 7.0%

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