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January 28, 2015

January 28, 2015

Posted by **joi** on Saturday, October 29, 2011 at 7:05am.

2.How to calculate original price before GST and before discount? What is the formula? Tks

- Maths urgent help needed, -
**Damon**, Saturday, October 29, 2011 at 8:11amoriginal price = p

discounted price = 0.85 p

tax = .03(.85 p) = .0255 p

so

836 = .85 p + .0255 p = .8755 p

p = 954.88

check

.85 * 954.88 = 811.65

811.65*1.03 = 836 good

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