Since I forgot to do the maths to this blog-post I am doing another one, explaining how much you would buy it for. If you haven't seen the original you can check it out here: http://peskiarahs.blogspot.com/2022/01/kick-start-sale-percentages-slj-2021.html
Enjoy:)
If you have 10% off $50, you have $45 as the ending price. If you have 30% off when you buy 3, that's a bit more complicated. If we multiply 50 by 3 that would come to 150, 30% of 150=45. So 150-45=105.