have 10 boxes each box contains 50 peices and we're selling for 8.00 per box. If I had to repackag them into 20 pieces each how much would I sell the repacked boxes for ? And how much for the quantity ?

You have to take the 8.00 and divide by 50 pieces to get the price per piece. Then multiply by 20 to get the new price per box.

Not sue what the second question is asking ? How many boxes will you have ? If that is the question then you must divide 50 by 20... That should give you 2 and 1/2 boxes ?