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A sample first:

1) ProductA - purchased 100 quantity at 100 each - so the base price is \100

2) ProductA - purchased another 100 quantity but this time at \150 each. If we combine the two, the new base price would be \125 correct? I just know that this is correct but I don't know it was derived. Anyone here would care to show me how?

What if we have this scenario instead?

  • Purchased 100 items for \100 each - base price is \100
  • Again we purchased 15 items for \150 each - the new base price for this is I don't know..

What is the new base price for this item?

1 Answers 1

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I doubt the question will be retained, still (it is an application of Weighted Mean):

$((p*q) + (s*t) / (q+t))$

Where,
p - Price of item 1
q - Qty of item 1
s - Price of item 2
t - Qty of item 2

So,

$((100*100)+(125*100))/(100+100)) = 125$

The solution to the second part of the question is left as an exercise to the reader. ;)

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    Th$a$nks i get this now! Answer to the second p$a$rt is $106.522011-12-20