In a box containing 45 bulbs. 12 are found to be defective. What is the ratio of the good bulbs to the total bulbs in the box?
- AOption (a)
8 ∶ 13
- BOption (b)
5 ∶ 8
- COption (c)
7 ∶ 11
- DOption (d)
11 ∶ 15
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Correct answer
8 ∶ 13















