Question

the ratio of the length of a school ground to its width is5:2. find its length, if the width is 40 meters
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Answer 1

Ratio of length to width = 5:2
Let Length = 5x
Width = 2x

ATQ. Width = 40 metres
Therefore 2x = 40
x = 20

Length = 5(20) = 100 metres

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Answer 2

first take length be .X

if,given length and width is 5:4

so,5x+4x=7x

now,7x=40-X

so,X=5

length=5x5=25m

breadth=2x5=10

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