A. 50m
B. 100m
C. 150m
D. 200m
Explanation:
Let length = 5x meters and breadth = 3x meters
Perimeter = 2 x (5x + 3x) m = 16x metres.
Perimeter = Total cost/Rate = (3000/7.50) m = 400 m.
16x = 400 or x = 25
(Length) – (breadth) = (5 x 25 – 3 x 25)m
= (2 x 25) = 50 m
Related Mcqs:
- The ratio between the length and breadth of a rectangular field is 5:4. If the breadth is 20 meters less than the length. The perimeter of the field is_________?
A. 260m
B. 280m
C. 360m
D. None of these - The length of a rectangular plot is thrice its breadth. If the area of the rectangular plot is 867 sq m, then what is the breadth of the rectangular plot?
A. 8.5 m
B. 17 m
C. 34 m
D. 51 m - An order was placed for the supply of a carpet whose breadth was 6 m and length was 1.44 times the breadth. What be the cost of a carpet whose length and breadth are 40% more and 25% more respectively than the first carpet. Given that the ratio of carpet is Rs. 45 per sq m?
A. Rs. 3642.40
B. Rs. 3868.80
C. Rs. 4216.20
D. Rs. 4082.40 - An order was placed for the supply of a carper whose length and breadth were in the ratio of 3 : 2. Subsequently, the dimensions of the carpet were altered such that its length and breadth were in the ratio 7 : 3 but were was no change in its parameter. Find the ratio of the areas of the carpets in both the cases.
A. 4 : 3
B. 8 : 7
C. 4 : 1
D. 6 : 5 - The length of a rectangle is twice its breadth, if length is decreased by 5 cm and the breadth is increased by 5 cm. The length of the rectangle is_________?
A. 20 cm
B. 30 cm
C. 40 cm
D. 50 cm - The length of a hall is (4/3) times its breadth. If the area of the hall be 300 square meters the difference between the length and breadth is__________?
A. 15m
B. 4m
C. 3m
D. None of these - The length of a rectangular plot is twice its breadth. If the area of the rectangular plot is 6075 sq.meters .what is its length?
A. 45m
B. 75m
C. 135m
D. None of these - Sides of a rectangular park are in the ratio 3: 2 and its area is 3750 sq m, the cost of fencing it at 50 ps per meter is_______?
A. Rs.150
B. Rs.100
C. Rs.125
D. Rs.175 - Nine men went to a hotel. Eight of them spent Rs.3 each over their meals and the ninth spent Rs.2 more than the average expenditure of all the nine. Determine the total money spent by them?
A. Rs.29.25
B. Rs.30.25
C. Rs.32
D. Rs.35 - A cuboidal water tank contains 216 liters is water. Its depth is 1/3 of its length and breadth is ½ of 1/3 of the difference between length and depth. The length of the tank?
A. 2dm
B. 6dm
C. 18dm
D. 72dm