Question

The cost of fencing a rectangular field at the rate of Rs. 7/metre is Rs. 350. If the length of the field is 11 metres more than its breadth, then find the length of the rectangular field.

A 28 metres Correct Answer Incorrect Answer
B 23 metres Correct Answer Incorrect Answer
C 20.5 metres Correct Answer Incorrect Answer
D 18 metres Correct Answer Incorrect Answer
E 22 metres Correct Answer Incorrect Answer

Solution

Let the length of the rectangular field be ‘l’ m Breadth of the rectangular field = (l – 11) m Therefore, perimeter of the rectangular field = 2 ×(l + l – 11) = (4l – 22) m According to the question, 4l – 22 = 350/7 Or, 4l = 50 + 22 Or, l = 72/4 = 18 metres

Practice Next
×
×