Question

1.13. The cost of cultivation of a 30 m long pieces of land is Rs. 150. If the breadth of the
land be 5m less, the cost would have been Rs. 120. Let's calsulate the breadth of the land.​

Answer 1

Answer:

25 m

Step-by-step explanation:

Let the cost for 1m x 1m land = y

Where 1m is length and 1m is breadth.

Given that;

The cost of cultivation of a 30 m long pieces of land = Rs 150

Let the breadth of the land = x

So,

[30 * x ] * y = 150

30xy = 150

If the breadth would have been 5m less, the cost would have been Rs 120.

[30 * (x-5)]*y = 120

=> 30xy - 150y = 120

=> 150 - 150y = 120

=> 150y = 30

=> y = 1/5

30xy = 150

=> 30x(1/5) = 150

=> x = 25

Therefore, the breadth of the land = 25 m

Answer 2

₹ 120. Find the breadth of the land.