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03 Oct 2019, 03:44
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B
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98% (00:52) correct
2%
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based on 45
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In a shipment of 150 machine parts 10% were defective and in another shipment of 100 machine parts 5% were defective. For the two shipments combined, what percent of the machine parts were defective?
A. 7.5%
B. 8%
C. 8.5%
D. 9%
E. 10%
A. 7.5%
B. 8%
C. 8.5%
D. 9%
E. 10%
03 Oct 2019, 04:34
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(10%×150+5%×100)/150+100=
(15+5)/250=8%
Option B
Posted from my mobile device
(15+5)/250=8%
Option B
Posted from my mobile device
03 Oct 2019, 20:04
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Bunuel
In a shipment of 150 machine parts 10% were defective and in another shipment of 100 machine parts 5% were defective. For the two shipments combined, what percent of the machine parts were defective?
A. 7.5%
B. 8%
C. 8.5%
D. 9%
E. 10%
A. 7.5%
B. 8%
C. 8.5%
D. 9%
E. 10%
Net Defective = 10% of 150 + 5% of 100 = 15.0 + 5*1.00 = 15 + 5 = 20
% of defective parts = \(\frac{20}{(150 + 100)}*100\) = 8 %
IMO Option B
