SOLUTION: If sum of a1+a2+a3+a4+a5+a6+a7+a8+a9+a10+a11+a12=360, find the sum of a1+a3+a5+a7+a9+a11

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Question 252524: If sum of a1+a2+a3+a4+a5+a6+a7+a8+a9+a10+a11+a12=360, find the sum of a1+a3+a5+a7+a9+a11
Answer by palanisamy(496) About Me  (Show Source):
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Given, a1+a2+a3+a4+a5+a6+a7+a8+a9+a10+a11+a12= 360
78a= 360
a= 360/78
a= 60/13 ....(1)
Next, a1+a3+a5+a7+a9+a11= 36a
= 36*60/13
= 2160/13
= 166 2/3