Question

the total cost of cultivating a rectangular field @ rupees 50 per metre square is 18330 if the breath of the field is 26 m find the cost of fencing the field @ rupees 20 per metre

Answer 1

Given
Breath of field = 26m
Rate of cultivating = 50/m^2
Cost of cultivating =Rs 18330
Total area of field = cost/rate
=18330/50
=336.6m^2
Area of field = l×b
336.6 = l×26
336.6/26=l
l = 12.95m
Perimeter of field = 2[l+b]
=2[12.95+26]
=51.9m
Cost of fencing = 51.9×20
=Rs 1038