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A line segment is divided into four part...

A line segment is divided into four parts forming an arithmetic progression . The sum of the lengths of 3 rd and 4 th parts is three times the sum of the lengths of first two part. If the length of fourth part is s14 cm, find the total length of the line segment.

Text Solution

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The correct Answer is:
`a -3 d + a-d +a +d + a+ 3d= 43n = 4 xx 8 = 32 cm`.
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