Question

The side wall of the museum is 5 m and is fitted with light bulbs 1/2 m apart. The total number of light bulbs along the wall is .

• A. 10
• B. 5
• C. 15

Answer 1

The correct option is A 10

Length of the side wall = 5 m

The light bulbs are $\frac{1}{2}$ m apart from each other.

$\therefore$ Number of lights = 5 $÷$ $\frac{1}{2}$
= 5 $\times$ $\frac{2}{1}$
= 10

Hence, there are 10 light bulbs.