Cost of fencing around a square field is Rs. 12000. If the cost of fencing per metre is Rs. 30, find the area of the square field.

When Marginal Cost is rising and Average Variable Cost is falling, Marginal cost lies below the Average Variable Cost. MC is less than AVC.

Side of square = 250 m  Perimeter of square = 4 x side  = 4 x 250  = 1000 m  Since, cost of fencing of per meter = Rs.20  Therefore, cost of fencing of 1000...

Length of rectangular park = 175 m  Breadth of rectangular park = 125 m  Perimeter of park = 2 x (length + breadth)  = 2 x (175 + 125)  = 2 x 300  = 600...

Distance covered by Sweety = Perimeter of square park  Perimeter of square = 4 x side  = 4 x 75 = 300 m  Thus, distance covered by Sweety is 300 m.  Now, distance covered...

Cost of a dozen pens (12 pens) = Rs.180  Cost of 1 pen = 180/12 = Rs.15  Cost of 8 ball pens = Rs.56  Cost of 1 ball pen = 56/8 = Rs.7  Ratio...

Distance covered by Bhavana in one round = Perimeter of the square field  = 4 × side of square field = 4 × 80 m = 320 m  Distance covered in 10...

Savings of Rahim per month = Rs (12000 – 9960) = Rs 2040 Monthly income of Ami = Rs 191520/12 = Rs 15960 Savings of Ami per month = Rs (15960...

Correct answer is (c) Rs 100 

Let the cost of a chair be Rs.x and that of a table be Rs.y, then  5x + 4y = 5600 ……..(i)  4x + 3y = 4340 ……..(ii)  Multiplying (i) by 3 and...

Let the cost of a spoon be Rs.x and that of a fork be Rs.y. Then  23x + 17y = 1770 ……….(i)  17x + 23y = 1830 ………(ii)  Adding (i) and (ii), we...