The floor of a room is 3 m long and 1m 50 cm broad. Find the number of the largest possible square slabs which can be used to pave the floor.

Correct option is B

Given:

Length of floor = 3 m = 300 cm
Breadth of floor = 1 m 50 cm = 150 cm

Formula Used:

Number of slabs $$= \frac{\text{Area of floor}}{\text{Area of one square slab}}$$​

Solution:

Side of square slab = HCF(300, 150)

Side of square slab = 150 cm

Number of slabs $$= \frac{300 \times 150}{150 \times 150} = \frac{300}{150} = 2$$​