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Tiffany's shop sold bags and wallet.  The bags were sold at $21 each and each wallet

was sold at 2/3 of the price of each bag. Tiffany sold 1/3 of the items on the first day and

collected $1680. 2/5 of the items sold were bags.

(a) How many wallets were sold on the first day?

(b) What was the total number of the items left after the first day?

 Dec 22, 2021
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(a) Because collected $1680. 2/5 of the items sold were the bags

So the bags sold 1680 * 2/5 = $672

We can suppose the first day sold x bags 

So  x * 21 * 2/3 = 672 So x = 48

(b) We can suppose originally have y bags before selling 

So y * 1/3 = 48 So y = 144

So the items left 144 - 48 = 96

 Dec 22, 2021

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