Question 22155
you have a jacket that cost 65 and get a discount of 30% plus the sales tax of 4%.  Ok, first let me tell you that to get the cost of the jacket most people will multiply 65 * .30 then subtract the answer from the 65 to get the cost of the jacket after the discount.  I will show that on the left, however, I like to save a step by multiplying by 70%.  there is a 100% in everything, 100-30 gives you 70%.  You are payiing 70% of the origional cost, so I multiply by this number and I don't have to subtract the answer from the cost of the jacket.  I will show this on the right.  When you get your cost after the discount, you have to add the sales tax of 4%.  Remember to move your decimal two places to the left when changing from a percent to a decimal.

65*.30=19.50 (discount)                      65*.70=45.50 (cost after discount)
65-19.50=45.50 (your cost after discount)    45.50*.04=1.82
45.50*.04=1.82 (tax)                         45.50+1.82=47.32
45.50+1.82=47.32(your final cost)