Question

A shop has 500 bulbs. Out of which 5 are defective. What percent of bulbs are defective?

Answer 1

Total bulbs = 500
No. of defective bulbs = 5
Percent of defective bulbs = (5/500) × 100
= 5/5
= 1
therefore 1% of bulbs are defective

Answer 2

Given :

A shop has 500 bulbs.

Out of which 5 are defective.

To Find :

What percent of bulbs are defective?

Solution:

Total number of bulbs = 500

Number of defective bulbs = 5

Percentage of bulbs are defective = $\frac{5}{500} \times 100$

Percentage of bulbs are defective = $1 \%$

Hence 1% of bulbs are defective