



 
Hi Lydia, The price of the book is $89.00 and then you need to add the GST which is 5% of $89.00. 5% of $89.00 is 5/100 × $89.00 = 0.05 × $89.00 = $4.45. Thus the price including the 5% GST is $89.00 + $4.45 = $93.45. If you want to do this in one step it is
Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 