In 2006 nova scotia consumers paid hst, harmonized sales tax, of 15%. tom wood traveled from alberta, which has only federal gst, goods and servtces tax, of 7% to nova scotia for a chemistry conference. when he later submitted his expense claims in alberta, the comptroller was puzzled to find that her usual multiplier of 7/107 to determine tax in a receipt did not produce correct results. what percentage of tom's nova scotia receipts were hst ?

Percentage:     we can let  be the expenses before the application of hst.amount of hst is therefore  because 15% is 0.15, and it is 15% of the expenses.the total amount is  because we are adding the amount of  hst to get the total, final expenses. increasing x by 15 percent is 1.15x. his total expenses upon submission includes nova scotia's hsthence the percentage of hst being    so around 13.04%.as a side note, i vaguely remember the hst causing a bit of a stir, at least where i lived.

For the first question the answer is a, for the second c, for the third d, for the 4th b, for the 5th a