CBSE BOARD X, asked by gunisha27, 9 months ago

Hello guys my answer is coming 80 .Can you please give the explanation also.​

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Answered by Anonymous
3

Answer:

The explanation is if you have total 400 bulbs then the defective one are 0.2%

so number of defective bulbs will be =4000*2/100(here we added 0in numerator and denominator because there is sign of percentage

by solving you wilk get 40*2=80

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