Answer:
It is one-half the area of a rectangle of length 4 units and width 5 units.
Step-by-step explanation:
4000 divide by 160 to get the cost of each book
4000 / 160 = 25
So that's £25 per book, multiply that by two because they gave two away which is £50 so they lost £50
Its 2, (why would you put a question if you know the answer!?!!?)
