6. quadrilateral abcd ~ quadrilateral pqrs. if ab = 10, bc = 6, ps = 12,
and qr = 4, find the scale factor of abcd to pqrs.

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.