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Posted by **Vince** on Sunday, July 4, 2010 at 1:29pm.

- Math -
**Ms. Sue**, Sunday, July 4, 2010 at 1:51pm0.8x = 80

x = 80/0.8

x = 100 >> selling price

0.8x = 100

x = 100/0.8

x = 125 >> marked price

- Math -
**Pintu**, Sunday, June 5, 2011 at 11:24pmOk, another solution for this problem:

20% of $80=16

so, the selling price=80+16=$96

Let, by the mark price of 20% profit=x

so, x-(20% of x)=96

or, x-x/5=96

or, x= (96*5)/4

or, x=$120 (Ans)

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