GST Calculator Question

Any tips or recommended calculators would be greatly appreciated. thanks in advance

By immediately posting again to your thread you have removed it from the unanswered threads list - not a good idea, for future reference.

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Thanks.

Given GST is equivalent to VAT

if GST=15% and Price ex GST is $100 the Price with GST=100*(1+0.15) or GST=100*(1+GST%)

Price with GST =X then price ex GST=X/(1+GST%)

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thank you so much for your suggestion

It is an INSTRUCTION that you need to follow.