Posted by Lynne on Sunday, December 19, 2010 at 2:00pm.
A sale at a electronic store offers 20% off a sony radio. If the sale price of the radio is $45, what is the regular price?

Math  Ms. Sue, Sunday, December 19, 2010 at 2:04pm
0.8x = 45
x = 45 / 0.8
x = 56.25

Math  Steve, Sunday, December 19, 2010 at 2:04pm
$45 x .20% = $9
$45 + $9 = $54

Math  Damon, Sunday, December 19, 2010 at 2:05pm
.8 p = 45
p = 45/.8 = 56.25

Math  Damon, Sunday, December 19, 2010 at 2:06pm
Steve it is 20% from original full price, not 20% of final price.
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