In a shipment of 120 machine parts, 5 percent were defective. In a shipment of 80 machine parts, 10 percent were defective. For the two shipments combined, what percent of the machine parts were defective ?
A. 6.5%
B. 7.0%
C. 7.5%
D. 8.0%
সঠিক উত্তরঃ
B.
7.0%
Explanation:
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