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Twotiered GST system 
20150314 

From Ruby: This question showed up in one of my Math assignments and nothing on the internet seemed to help me find a way to calculate it.
A certain country has a twotiered GST system. For the first $1500 of any item, GST is levied at 10% and any amount over $1500 is levied at 15%.
Determine the amounts that give the following GSTs.
a) $350
b) $780 Answered by Penny Nom. 


