Triangle A'B'C' is the image of ABC under a rotation about the origin, (0,0)

-75

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest

This is about circle theorems. someone asap : (

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /