Question

The total cost of whitewashing a wall at rupees 25 per square metre is rupees 12150 if the length of the wall is 27m, find the breadth of the wall

Answer 1

Cost of whitewashing =₹25 metersquare

Total cost=12150

Then area of wall must be 12150/25

=486metersquare

Area of rectangle =l×b

L=27

B=x

Then 27 × x=486

x = 486/27

B=18

Breadth of wall = 18cm