jason went shopping,
he bought a watch and a pair of trainers for a total price of £53.55,
this price includes a 15%loyalty discount.
before the discount the trainers were priced at £38
work out the price of the watch before the discount
worked it out myself
£25
0.85(Pw+38) = 53.55.
Pw + 38 = 63
Pw = 25. = Price of the watch.
100 - 15% = 85
€53.55 divided by 85 = 0.63
0.63 X 100 = 63
63 - 38 = 25
Hope that helps :)
To find the price of something before or after (in this case before) you must follow these steps:
100%-15%= 85%
( because 100% its the whole amount of the number)
then 100%÷85%= 0.85
And thats were the 0.85 came from :)