Lizzy: While passing by a store, Miley noticed that a bag that cost $150 last week is now on sale for $135. What percent is the discount?.
Me: Hmmm, let me think. I think this is the detailed solution:
The bag is now sold for $150 - $135 = $15 less. The discount is 15 / 150 = 1 / 10. Thus, the percent discount is 1 / 10 x 100% = 10%. Final answer: 10.