Consider the statement:
Ratio of breadth and length of a hall is 2:5. Complete the following table that shows some possible breadths and lengths of the hall.
Breadth of the hall (in metres) | 10 | | 40 |
Length of the hall (in metres) | 25 | 50 | |
(i) Firstly,
It is given in the question that ratio of breadth and length of hall is 2: 5
Also, we have:
Length = 50 m
Therefore,
= 
5 × breadth = 50 × 2 [By cross multiplying]
5 × breadth = 100
Hence,
Breadth = 
= 20 m
(ii) In this part, we have
Breadth = 40 m
It is given in the question that ratio of breadth and length of hall is 2: 5
Therefore,
= 
2 × Length = 5 × 40 [By cross multiplying]
2 × Length = 200
Hence,
Length = 
= 100 m
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