Posted by gaby on Wednesday, January 6, 2010 at 8:44pm.
if a gift is 42.40 including tax,what is the retail price for the gift if the sales tax is 6% ??

math  Marth, Wednesday, January 6, 2010 at 8:47pm
Set up a ratio. The cost of the gift including tax is 106% of the cost without tax.
42.40/106 = x/100
Solve for x.
(Note it does not matter whether you use 1.06 or 106 for the percentages in the ratio as long as you are consistent).

math  Ms. Sue, Wednesday, January 6, 2010 at 8:47pm
1.06x = 42.4
x = 42.4 / 1.06
x = ?

math  drwls, Wednesday, January 6, 2010 at 8:48pm
42.40 = X * 1.06
where X is the retail price
X = 42.40/1.06 = $40.00
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