In a factory there are three types of machines b1, b2, and b3 which produces 20%, 15%, and 32% of the total products respectively. Further, machines b1, b2, and b3 which produces 3%, 7%, and 2% defective products respectively. Find the percentage of non-defective products?

Question

Option 1: 46%

Option 2: 30%

Option 3: 53%

Option 4: 64%

AfterBoards · Accepted Answer

b1 produces 20% of the products. Of these 3% are defective. Hence, defective machines =3/100x20=0.6%, and non-defective = (20-0.6)\%=19.4% b2 produces 15% of the products. Of these, 7% are defective. Hence, defective machines =7/100x15=1.05\%, and non-defective =(15-1.05)\%=13.95% b3 produces 32% of the products. Of these 2% are defective. Hence, defective machines =2/100x32=0.64\%, and non-defective =(32-0.64)\%=31.36% Hence, percentage of non-defective products =19.4+13.95+31.36=64.71%, which is approximately 64\%

IPMAT Rohtak 2020 (QA) PYQs

In a factory there are three types of machines b1, b2, and b3 which produces 20%, 15%, and 32% of the total products respectively. Further, machines b1, b2, and b3 which produces 3%, 7%, and 2% defective products respectively. Find the percentage of non-defective products?

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