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An electrician purchases 64 light bulbs from a store. During installation, he finds that only 56 bulbs
work properly. Calculate the percentage of defective bulbs.​

Answer 1

Answer:

87.5% bulbs are not defective 12.5% bulbs are defective

Answer 2

Answer:

The percentage of defective bulbs is 12.5%.

Step-by-step explanation:

To calculate the percentage of defective bulbs, we need to first determine the number of defective bulbs.

The electrician purchased 64 bulbs, and out of these, only 56 work properly. This means that the number of defective bulbs is:

64 - 56 = 8

So, there are 8 defective bulbs.

To find the percentage of defective bulbs, we can use the following formula:

Percentage of defective bulbs = (Number of defective bulbs / Total number of bulbs) x 100%

Substituting the values we get:

Percentage of defective bulbs = (8 / 64) x 100%

= 0.125 x 100%

= 12.5%

Therefore, the percentage of defective bulbs is 12.5%.

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