One-fifth of the batteries produced by an upstart factory are defective and one -quarter of all batteries produced are rejected by the quality control technician. If one-tenth of the non-defective batteries are rejected by mistake and if all the batteries not rejected are sold, then what percent of the batteries sold by the factory are defective?

A 4%
B 3%
C 6%
D 5%

Correct Answer: 4%

Bissoy MCQ
#উচ্চতর গণিত #সমতলে বস্তুকণার গতি (Motion of particles in a plane) #G ইউনিট #জাহাঙ্গীরনগর বিশ্ববিদ্যালয়

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