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So, I am having a little bit of trouble. My solution was (7.2*5+7.2*5+7.2*5+1.25*10)/25. Can you tell me if this is wrong? If yes, how?

I also don't understand why we would divide by 10 in your solution. Because in weighted average, we are supposed to divide by the total items, not the final item value. So, shouldn't it be divided by 25? or 15 if we club 5 mil shares in first 9 months and 10 mil in last quarter?
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harshitasinghal
So, I am having a little bit of trouble. My solution was (7.2*5+7.2*5+7.2*5+1.25*10)/25. Can you tell me if this is wrong? If yes, how?

I also don't understand why we would divide by 10 in your solution. Because in weighted average, we are supposed to divide by the total items, not the final item value. So, shouldn't it be divided by 25? or 15 if we club 5 mil shares in first 9 months and 10 mil in last quarter?
7.2 is the total for the whole 9 months, not for three separate chunks.

The question is elaborated quite a bit in several posts on the previous two pages. Please go through them and review carefully. If you are still not satisfied, here is a link to another discussion of the same question: https://gmatclub.com/forum/a-corporatio ... 02342.html

Hope it helps.
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