Question

a store buys a jacket for $20.00 and sells if to a costemer for 80% more then that . what is the selling price of the jacket

Answer 1

10% of 20 is 2.  So multiply 2 x 8, which is 16.  Then, take 20 and add 16 to it.  That gives you 36, which is your answer.  

Answer 2

so you work out 80% of 20 which is 16
and you add that to £20 which is £36