The length of hall is (4/3) times its breadth. If the area of hall be 300 square meters, the difference between the length and the breadth is?

15 meters
4 meters
3 meters
None of these

Correct Answer: None of these

Explanation:

Let breadth = b meters.
Then, length = 4b/3 meters.
∵ b x 4b/3 = 300
⇒ b² = 300 x 3/4
⇒ b² = 225
∴ b = 15
Hence, required difference = [(Length) - (Breadth) ]
= 4b/3 - b
= b/3
= 15/3 m
= 5 m

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