Posted by **Anonymous** on Monday, February 4, 2013 at 11:11am.

Find five numbers in A.P. whose sum is 12.5 and the ratio of first to the last is 2 : 3.

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**Steve**, Monday, February 4, 2013 at 11:14am
5/2 (2a+4d) = 25/2

a/(a+4d) = 2/3

a=2 d=1/4

2, 2¼, 2½, 2¾, 3, ...

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