Question

A floor is 40m long and 15m broad. It is covered with tiles, each measuring 60 cm by 50 cm. Find the number of tiles required to cover the floor.

Answer 1

Floor?
Length =40m=40*100=4000
Breadth==15*100=1500
Area =4000*1500=6000000
Tiles,
Length=60cm
Width=50
Area=50*60=3000cm
No of tiles required=6000000/3000=2000

Answer 2

change m to cm 40 ×100 =4000cm
15 ×100 =1500cm
area of floor = 4000cm × 1500cm = 6000000cm ^2
area of a tile = 50 cm ×60 cm = 3000cm^2
No of tiles = area of floor / area of a tile
= 6000000cm ^2 / 3000cm^2 = 2000
=2000 tiles are required to cover the floor