Question

of floor measuring 2 by 1.5 m is to be covered with tiles measuring 25 CM by 25 cm find the number of tiles required to cover the floor and the cost of the tiles at rupees 420 per dozen

Answer 1

first up change all into cm then area of floor=2.100.1.5.100 then find area of tiles by same process and divide area of floor by area of tiles then u find nmbr of tiles