Question

how many square tiles of side 9 CM will be needed to fit in a square floor of a bathroom side 720 cm find the coast of tiling at the rate of rupees7.50per tile

Answer 1

no.of tiles required = total side of bathroom
                                  ------------------------------
                                        side of 1 tiles

     720
=   -----  =80
       9
no of tiles required  = 80
cost = 80x7.50
        =600