Question

The cost of flooring at ruppes 20 per square meter is ruppes 4,200. If the length of the room is 21 m, then it's breadth is -:​

Answer 1

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.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Can any body tell me the answer