Question

A box contains 24 bulbs out of which 6 are defective. The ratio of good bulbs to defective bulbs is

• A. 3:1
• B. 1:3
• C. 1:4
• D. 4:1

Answer 1

The correct option is A

3:1

Given
Total number of bulbs in the box = 24
No. of defective bulbs =6
No. of good bulbs = $24-6$ = $18$
Now the ratio of good bulbs to defective bulbs = 18:6
It is also written in the form of a fraction like $\frac{18}{6}=\frac{6\times 3}{6\times 1}$$=\frac{3}{1}$
So, the ratio of good bulbs to defective bulbs is 3:1.