Question

the cost of flooring at 20 rupees per square metre is rupees 4200 if the length of the room is 21 m find the breadth is the option is that 5 M 10 M 15 M or 20 m

Answer 1

Heya mate,
Here is your answer,

flooring 1m² costs = Rs.20
total cost for flooring the floor = Rs.4200
length of the floor = l = 21m
let the breadth = b

Area of the floor = l × b = 21m × b

cost of flooring of the room = area of the room × cost of flooring per m²

=> 4200 = ( 21 × b ) × 20

=> 4200/20 = 21 × b

=> 21 × b = 210

=> b = 210/21
= 10m

Hence the breadth (b) of the room is 10m.

I tried to explain it in the simples method

Hope this helps

if you have further doubt or want any help, feel free to ask me. I would like and try to help you.

Thank you

#Sneha
brainly benefactor

Answer 2

Answer:

here is your answers 10 m