• # question_answer The ratio of the length of a school ground to its width is 5 : 2. If the width is 40 metres, then the length is? A) $120\,\,m$                   B) $100\,\,m$C) $100\,\,m$                   D) $60\,\,m$

Solution :

Let length and width of a school ground are$5x$  and$2x$ ,  then,           $2x$ = 40 $x$ = 20 metres Hence the length = $5x$ = 5 $\times$ 20                            = 100m

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