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The length of a rectangular hall is ...

The length of a rectangular hall is 5 m more than its breadth . If the area of the hall is `750 m^(2)` then its length is

A

15m

B

20m

C

25m

D

30m

Text Solution

Verified by Experts

The correct Answer is:
D
Let the length be x metres , then breadth `=( x-5) m.`
`therefore x(x-5)=750 implies x^(2)-5x-750 =0implies (x-30)(x+25)=0implies x=30[:' x ne - 25 ].`
Hence , length = 30m.
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