The average of the first and second of the three members is 15 times higher than the average of the second and third. Distinguish between the second and third of the three.
The four options are- 15, 60, 36 and 30
I have found this on a ssc math book.
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Let e\the three numbers be a,b and c
∴A.t.Q:−( 2a+b )−( 2b+c )=15 2a+b−b−c=152a−c =15∴a−c=30∴ Difference b/w 1 stand 3 rd no. ie a−c=30
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heres your answer
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