Question

ek tile jiski map 10cm×12cm haii 3m×4m ki diwar me aise tile lagenge adi 1 tile ki kimat ₹2 haii

Answer 1

LENGTH OF WALL = 4M 
BREDTHOF WALL =3M
AREA OF WALL =3*4M = 12M = 1200 CM

LENGTH OF TILE =12CM
BREDTH OF TILE =10 CM
AREA OF TILE =120 CM
TILES NEEDED TO COVER THIS WALL = 10 TILES 
COST= 10*2= 20

Answer 2

area of tile
$10 \times 12 \\ 120cm {}^{2}$
area of wall
3m = 300 cm
4 = 400 cm
$300 \times 400 \\ 120000$
no. of tile in wall
$\frac{120000}{120} \\ 1000$
no. of tiles required is 1000
cost of one tile is 2
for thousand tile
1000×2
2000