Question

The cost of ploughing a rectangular field at the rate of Rs 4 per meter square is Rs 1280. if the length of the field is 3.2m, find its width​

Answer 1

Step-by-step explanation:

given

total cost = 1280

rate per unit area=4

therefore area=tot cost/per unit rate

= 1280/4 = 320

now l×b=320

=> 3.2×b=320

b=100m

Answer 2

Answer:

100m

Step-by-step explanation:

rate×area=total cost

4×area=1280

area=320

l×b=320

3.2×b=320

b=100m