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प्रश्न
The ratio of the length and the width of a school ground is 5 : 2. Find the length, if the width is 40 metres.
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उत्तर
Let the length = x m,
width = 40 m
The ratio of length to width = x : 40
as per given statement 5 : 2 = x : 40
⇒ 2 × x = 40 x 5
x = `(40xx5)/2` = 20 × 5 = 100 m
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