Question

The total cost of flooring a rectangular
room at 8.50 per sq. metre is 510. If
the length of the room is 8 m, what is
the breadth?​

Answer 1

Answer: 7.5m

Step-by-step explanation:

cost per sq.m=8.50

total cost = 510

total cost =total area*rate per sq.m

510=total area*8.50

area=510/8.5=60

area=length*breadth

breadth=area/length

breadth=60/8

breadth=7.5

therefore,breadth = 7.5