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January 25, 2015

January 25, 2015

Posted by **vaidehi** on Monday, April 15, 2013 at 4:48am.

- math -
**Reiny**, Monday, April 15, 2013 at 10:10amselling price of each --- x

cost price of first = x/1.25

cost price of 2nd = x/9

total cost price = x/1.25 + x/.9

= 4x/5 + 10x/9 = 86x/45

profit / loss = selling price/cost price

= 2x / (86x/45)

= 2(45/86) = 1.0465...

so he made a profit of 4.65%

e.g. suppose he sold both at $100

then he bought the first at 100/1.25 or $80

and he bought the 2nd at 100/.9 = 111.11

So his total cost price was 191.11

and he sold at 200

200/191.11 = 1.0465

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