Question

Jive two examples SAMPLE 1 A door-frame of dimensions 3 mx 2 m is fixed on the wall of dimension 10 m 10 m. Find the total labour charges for painting the wall if the labour charges for painting 1 m’of the wall is 2.50.​

Answer 1

WE ARE ACTUALY PAINTING THE AREA OF THE WALL,BUT WE DO NOT PAINT THE DOOR,

THE AREA OF THE WALL INCLUDING THE DOOR IS 10*10=100 M SQUARE

THE AREA OF THE DOOR

=3*2=6 M SQUARE

SO THE AREA OF THE WALL ALONE EXCLUDING THE DOOR IS

=100-6=94 M SQUARE

SO THE AREA OF THE PORTION TO BE PAINTED=94 M SQUARE

IT IS SAID THAT IT TAKES 2.50 RS TO PAINT 1 M SQUARE AREA,

SO IT TAKES 94*2.50=235 RS TO PAINT THE WALL

hope it is helpful ✌