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In a factory there are three types of machine M1, M2 and M3 which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2%, 4% and 5% defective products, respectively. what is the percentage of non-defective products ?

A. 89%

B. 97.1%

C. 96.1%

D. 86.1%

E. None of these

Answer: Option C

Solution(By Examveda Team)

Non-defective products M1 = 25 × 0.98 = 24.5%
Non-defective products M2 = 35 × 0.96 = 33.6%
Non-defective products M3 = 40 × 0.95 = 38%
Percentage of non-defective products
= 24.5 + 33.6 + 38
= 96.1%

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Comments ( 2 )

  1. Examveda
    Examveda :
    4 years ago

    Answer Updated

  2. HEMANTH RAM
    HEMANTH RAM :
    4 years ago

    Please explain briefly sir.....
    0.98 0.96 & 0.95

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