Discounts to several differentitems in a buy 7 get 2 free.

[kit]

I need a little help. I'm trying to find out the amount of a discount to several differentitems in a buy 7 get 2 free. The cost ofthe 9 items were $90, $125, $90, $60, $60, $100, $100, $100, $100. Both $60amounts were taken off the bill as the 2 lowest amounts was the discount($120). How do I apply the discount rateto each item as there were several different people paying for theiritems. All items were put together inorder to receive the discount offered. Please help.

 

[Deleted member 4993]

I need a little help. I'm trying to find out the amount of a discount to several differentitems in a buy 7 get 2 free.The cost ofthe 9 items were $90, $125, $90, $60, $60, $100, $100, $100, $100. Both $60amounts were taken off the bill as the 2 lowest amounts was the discount($120).How do I apply the discount rateto each item as there were several different people paying for theiritems.All items were put together inorder to receive the discount offered.Please help.

Total bill w/o discount = 825;

Total bill with discount = 705;

So everybody pays (705/825) fraction of their original bill.

 

[Steven G]

I'd try this:
1: buy 9 @ 125, so get $250 discount.
2: return 8 items and replace with 60,60,90,90,100,100,100,100.
Ahem!!

Yep, I was right when I said that you're a better cheater than me (and I'm originally from Brooklyn).

 

[Steven G]

From Brooklyn hey?
Where teachers teach along the lines of:
if you steal one apple, then steal 2 more,
how many apples have you got?

More along the lines of if little Johnny buy 1 ounce of cocaine for $100 and makes 4 gram bags and sells them each for $20 how much profit does he make? The problem is that before anyone can answer there are gun shots.

The sad part is that a teacher actually asked a problem similar to what I wrote above thinking that it would relate to the students. He was quickly fired

 

[kit]

Total bill w/o discount = 825;

Total bill with discount = 705;

So everybody pays (705/825) fraction of their original bill.

But that doesn't work. If you do the reverse math, you don't come up with the total we paid with discount. We paid $705 plus tax. The $120 discount must applied in a certain percentage so as it is fair across the board.

 

[stapel]

But that doesn't work. If you do the reverse math, you don't come up with the total we paid with discount. We paid $705 plus tax. The $120 discount must applied in a certain percentage so as it is fair across the board.

Please reply showing your work, so we can see where things are going wrong. Thank you!

 

[Steven G]

Please reply showing your work, so we can see where things are going wrong. Thank you!

And also who is making the mistake!