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Determine how much has been added or subtracted as specified in the problems below:
a. The price of a pool table, inclusive of GST, is $4950. What is the value of the GST component of this price?
b. A lawn-mowing business charges $82.50 for mowing a customer’s lawns, inclusive of GST. What is the price of the lawn-mowing excluding GST?
c. A camera has been reduced in price by 30%, and the new price is $850. What is the dollar value of this price reduction, and what was the original price of the camera (both rounded to two decimal places)?