need help on a simple question.

any helps is appreciated. Please find the question attached

Attachment 21607

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- May 27th 2011, 12:20 PMmathieWeighted factors
need help on a simple question.

any helps is appreciated. Please find the question attached

Attachment 21607 - May 27th 2011, 03:40 PMpickslides
Hi there mathie,

Please don't double post.

Your excel sheet makes sense to me. But the question may lack some context. - May 27th 2011, 04:06 PMemakarov
Let and be the non-working years of A and B, respectively, and let and be the total years (non-working plus working) of A and B. Then the share of the non-working years for A is , and the share for B is . Finally, the total share is .

Thus, .